

A (paid) VPN allows you to use stuff like discord without compromising your privacy, as long as you don’t share personal informations. Mullvad, for example, lets you even pay with cash.
There are private mail services, paid ones, from companies that value their customers’ privacy. I think a couple of them that I’ve checked accept cash payments too.
These are just a couple examples of services for using the internet without compromising your privacy. There are tons of sources to research deeper in the topic and decide what you need to achieve your goal.
There’s also nothing wrong in being the “weird” one in your circle that doesn’t use WhatsApp, or that doesn’t save contacts in the phone. In my opinion, at least.
Remember you don’t need complete anonimity to protect your privacy, you just need to blend with the crowd and NOT give away personal sensitive data like you are doing with questionable services like chatGPT.
A real sociale life, plus the help of a psychologist, will yeld better results. The second will be useful not only to improve your social life, but also to help with what seems a paranoid approach to this matter.
I have already explained you that you do not need anonymity to protect your privacy and that it’s pretty easy to blend with the crowd so that your online activity becomes pretty useless to anyone, even though it could still potentially be traced back to you.