How to make bot dm me when someone sends a specific message in discord

@client.event
async def on_message(message):
     if message.content == "help me":
         user = client.get(My_id) 
         if user is not None:
             await user.send("Someone needs help")

Is there any way to make bot dm me when someone sends a specific text like they type help me in channel and I get dm that "Hi someone needs help" I tried the code above but didnt work it shows user = client.get(My_id) AttributeError: 'Bot' object has no attribute 'get' please give the answer in python and Thanks in advance for the answer and I I'm making the bot for discord

try it:

@client.event
async def on_message(message):
     if message.content == "help me":
         user = await client.fetch_user(12345678909876543) # id goes here

         if user is not None: # if id is correct
             if user.dm_channel is None: 
                 # if DM channel is not created
                 await user.create_dm()

             await user.dm_channel.send("Someone needs help")