Same here in the US, only major cities have somewhat acceptable public transport and the price of cars is insane. My advice for you, get a cheap used car (most older cars are good for privacy because the computers are lacluster at most.), and do some preventitve maintince to keep it out of the shop.

You can start by looking up your name on major search engines and delete social accounts that are yours, and for the people search websites some of them have opt outs but most are really annoying and don’t comply (in my experience)
Consider using a privacy respecting browser like Firefox with the extension uBlock origin. Keep it to a max of two other extensions because it makes your browser more identifiable.
Consider using open source software over closed source software (just because it’s open source doesn’t mean it’s always safe)
For email I use proton mail and I’ve been very happy with it along with there other stuff.
As some other people have mentioned, self hosting is a good option if you have the time for it, and a spare computer laying around.
When I was younger I was amazed by how easy it was to track people on the early internet. this is when putting a script tag in a comment section to show images in comments was popular but quickly became exploited and faded away. I also became worried about this in my web development class learning how to use JS and saw how easy it was for a bad actor to execute malicious JS on people’s browsers.
Same here, while this was a few years back it’s still relevant. My girlfriends parents are helicopter parents and would have a back door into everything if they could. So the one day I noticed that her mother had said to me that she doesn’t mind us going to movies two weeks from then. This was only said between the two of us in a text. This was a good opportunity to switch her over to signal. She asked me if there is a way to check if she was in anything else so I had her change password and move over to a password manager instead of the paper notebook in her room that her mother probably looked through.
Only a week later her mother did look through that notebook at one point for passwords because because she openly asked for it one day “so she could check her school email for scholarship information”, didn’t ask for just the password, but the whole notebook. From what I remember my girlfriend had a conversation with her mother about privacy that would turn into an argument.
Moral of the story, even people you are told you are supposed to trust aren’t trustworthy.