First, you go to https://replit.com/
Then, you click sign up

Then you sign up with whatever login method you prefer, so ill do google

Then you answer their questionaire

I said: First name hello last name there using for personal use hit next
choose the starter free plan
start creating:

then create app

choose template

choose a name if you want then hit create app

dismiss this ai first shit

close the assistant

click the ai button

disable ai


now you should be all good !
any programs you write will be saved to your replit account, and you can write stuff purely in the browser. it is not very limited on what can be done, as long as what you are doing is primarily terminal based.