I may be very wrong, but it sounded to me like the problem isn’t the account getting hacked - the problem is the account getting suspended or removed by the platform itself. So 2FA etc will not help at all.

In some cases, the scammers apparently have a way to get the suspension reversed, which makes you wonder whether they actually work at Meta/OnlyFans, and are suspending accounts for no reason, in order to ransom them back to the owners.

“Some appropriate message.”

The “capitalism” emoji.

I really like “News in Slow French” for listening practice. It’s not free, but very good. For general vocab, I have an app called “Clozemaster” that I enjoy a lot. I also try to cook regularly from French cookery magazines, so that I’m actively using the language. Other than that, maybe see whether there are any local social groups for people who want to improve their French. Something with a specific activity that encourages communication is good, e.g. playing board games.

Oh, and even if you can’t get much communications practice with other people, keep an audio diary. Set a goal to record yourself speaking in French about your day for fifteen minutes every day. On the weekend, sit down and listen to your diary, and correct any mistakes, look up any vocab words you were missing, etc. You need to spend time every day using French so that you develop muscle memory. Correcting your own errors helps you learn, and also lets you see how you’re progressing. If you listen back to your first diary entry in a few months, you’ll be surprised how much you’ve improved.