[SOLVED] Pytorch Neural Networks Multilayer Perceptron Binary Classification i got always same accuracy

I'm trying to multilayer perceptrone binary classification my own datasets. but i always got same accuracy when i change epoch number and learning rate.

My Multilayer Perceptron class

class MyMLP(nn.Module):
    def __init__(self, num_input_features, num_hidden_neuron1, num_hidden_neuron2, num_output_neurons):
        super(MyMLP, self).__init__()
        self.hidden_layer1 = nn.Linear(num_input_features, num_hidden_neuron1)
        self.hidden_layer2 = nn.Linear(num_hidden_neuron1, num_hidden_neuron2)
        self.output_layer = nn.Linear(num_hidden_neuron2, num_output_neurons)
        self.relu = nn.ReLU()
        self.sigmoid = nn.Sigmoid()

    def forward(self, X):
        X = torch.tensor(X, dtype=torch.float)
        hidden_res1 = self.relu(self.hidden_layer1(X))
        hidden_res2 = self.relu(self.hidden_layer2(hidden_res1))
        output = self.sigmoid(self.output_layer(hidden_res2))
        return output

My Dataset class

class PrincessDataset(Dataset):
    def __init__(self,dataName):
        #dataloading
        xy = np.loadtxt(dataName, delimiter=',', dtype=np.float32, skiprows=1)
        self.x = torch.from_numpy(xy[0:, :-1])
        self.y = torch.from_numpy(xy[:,-1])
        self.n_samples = xy.shape[0]
    def __getitem__(self, index):
        return self.x[index] , self.y[index]
    def __len__(self):
        return self.n_samples

My Code

batch_size = 16
num_workers = 2
test_data = PrincessDataset('cure_the_princess_test.csv')
train_data = PrincessDataset('cure_the_princess_train.csv')
validation_data = PrincessDataset('cure_the_princess_validation.csv')

train_loader = torch.utils.data.DataLoader(train_data, batch_size=batch_size, shuffle=True, num_workers=num_workers)
test_loader = torch.utils.data.DataLoader(test_data, batch_size=batch_size, shuffle=False, num_workers=num_workers)
validation_loader = torch.utils.data.DataLoader(validation_data, batch_size=batch_size, shuffle=False, num_workers=num_workers)

# func parameters num_input_features, num_hidden_neuron1, num_hidden_neuron2, num_output_neurons

num_input_features = 13
num_hidden_neuron1 = 100
num_hidden_neuron2 = 50
num_output_neuron = 1 #binary classification
####
num_epochs = 200
learning_rate = 0.001
patience = 5
patience_counter = 0
###
model = MyMLP(num_input_features,num_hidden_neuron1, num_hidden_neuron2,num_output_neuron)

criterion = nn.BCELoss()
optimizer = torch.optim.SGD(model.parameters(), lr=learning_rate)
list_train_loss, list_val_loss = [], []
best_val_loss = None

for epoch in range(num_epochs):
    train_loss = 0.0
    train_count = 0.0
    for inputs, labels in train_loader:
        optimizer.zero_grad()
        outputs = model(inputs)
        loss = criterion(outputs.squeeze(), labels)
        loss.backward()
        optimizer.step()
        train_count += 1.0
        train_loss += loss.item()

    validation_loss = 0.0
    with torch.no_grad():
        model.eval()
        for inputs, labels in validation_loader:
            outputs = model(inputs)
            loss = criterion(outputs.squeeze(), labels)
            validation_loss += loss.item()

    model.train()
    train_loss /= train_count
    validation_loss /= len(validation_loader)
    print("Epoch", epoch, "Training loss", train_loss,"Validation Loss :",validation_loss)

    list_train_loss.append(train_loss)
    list_val_loss.append(validation_loss)
    
    val_score = validation_loss
    if best_val_loss is None:
        best_val_loss = val_score # hafızada patience boyu tutmaya başla
        torch.save(model.state_dict(), "bestval.pt")
    elif best_val_loss < val_score: # patience counter
        patience_counter += 1
        print("Earlystopping Patience Counter:",patience_counter)
        if patience_counter == patience:
            break
    else:
        best_val_loss = val_score
        torch.save(model.state_dict(), "bestval.pt") # to keep the best model
        patience_counter = 0
                   

sns.set_style("darkgrid")
plt.plot(list_train_loss, label="Training loss")
plt.plot(list_val_loss, label="Validation loss")
plt.xlabel("Epoch")
plt.ylabel("Loss")
plt.legend()
plt.show()

Accuracy calculating

model = MyMLP(num_input_features,num_hidden_neuron1, num_hidden_neuron2,num_output_neuron)
model.load_state_dict(torch.load('bestval.pt'))
model.eval()
predicts =[]
real_labels = list()

n_correct = 0
n_samples = 0
with torch.no_grad():
    for inputs, labels in test_loader:
        outputs = model(inputs)
        _,predict = torch.max(outputs.data,1)
        n_samples += labels.size(0)
        predicts.extend(predict.tolist())
        real_labels.extend(labels.tolist())

from sklearn.metrics import f1_score,accuracy_score,classification_report
print("Accuracy score of this model: {}".format(accuracy_score(real_labels,predicts)))
print(classification_report(real_labels,predicts))

Accuracy Result :

Accuracy score of this model: 0.49740932642487046
              precision    recall  f1-score   support

         0.0       0.50      1.00      0.66       384
         1.0       0.00      0.00      0.00       388

    accuracy                           0.50       772
   macro avg       0.25      0.50      0.33       772
weighted avg       0.25      0.50      0.33       772

i got some accuracy score when i change epoch number, learning rate. im trying 3 days fix that problem. can you help me?

my csv files looks like this

Phoenix Feather,Unicorn Horn,Dragon's Blood,Mermaid Tears,Fairy Dust,Goblin Toes,Witch's Brew,Griffin Claw,Troll Hair,Kraken Ink,Minotaur Horn,Basilisk Scale,Chimera Fang,Cured
10.0,15.3,27.1,13.3,18.1,12.3,4.8,24.0,10.0,17.5,5.9,27.6,8.6,0
31.6,1.9,25.2,17.9,16.4,2.4,4.2,6.4,32.5,21.9,19.7,12.4,17.4,1
22.4,9.2,23.7,14.9,18.2,10.5,6.8,15.3,21.0,16.8,31.6,19.4,11.6,0
24.5,2.3,2.2,26.2,7.3,2.8,20.6,7.8,23.0,17.0,2.7,7.6,26.0,1
3.2,20.2,12.9,13.3,7.7,29.6,2.6,12.9,12.7,13.8,8.9,6.5,9.1,0
15.7,17.5,14.4,12.2,11.9,4.2,1.7,6.4,20.9,12.5,21.1,15.6,12.4,1
.
.
.

first row is label names, last column is classification 0 or 1, other columns is input values