How to run a PWA program made with Python and flet on the Internet

I have created an application using flet and now I want to upload it as a PWA so that anyone can access it and I also want to assign a domain to it. First of all, how do I do this? (I don't intend to use fly.io for some reason) And can I get a server and run it on the server? How?

I used fly.io but it asked me to enter a credit card which I don't have available at the moment. I also used replit, but when I tried to replace the existing program with my own program, it gave many errors.

1. Buy a domain main. You can use domain register such as Porkbun or Namecheap. Basic .com domain cost around 10$/year. I recommend you buy domain name like firstnamelastname.com or lastname.com and host your services at subdomains like myapp.mydomain.com. And you actually need credit card here.
2. Get a server. I personally using Hetzner VPS servers. Cheapest one cost something like 3.5 euros/month. If you dont have credit card, you can look at Heroku. There is free plan available and if you didnt buy a domain name you can use their domain. For example, an app named example-app is hosted at example-app-1234567890ab.herokuapp.com. But free plan is very restricted.
3. If you bought custom domain then you should configure your DNS records to point to your server.
4. Deploy the app. If you use VPS you should know basics of linux, also git for copy your project to the server. For heroku read their docs.
5. If you use VPS you also want to use reverse proxy like Nginx or Caddy or Traefik to point local address to your domain.