I think one other thing (as many other posters have mentioned great resources already, so I’d just be reiterating what you’ve already said) to consider is that …it doesn’t have to happen all at once. You can move one thing at a time, you don’t have to burn yourself out or exhaust yourself trying to set up everything in one day, or read up on every little thing. take your time, evaluate your options. don’t feel locked in to anything, since things can always change.

I personally use:

• Proton Mail (and their other apps as well, including SimpleLogin, aside from their password manager. I personally find it worth it to pay for their services. I used Tutanota in the past)
• Librewolf (as a browser, I used to use Vivaldi but I wanted to move away from Chrome, however I still like Vivaldi, for the record)
• Bitwarden (password manager)
• Kagi (as a search engine, I’m very fond of it and splitting the cost of a duo subscription with my partner. I used to use Ecosia)
• various web browser extensions (canvas blocker, uMatrix, Librewolf has uBlockOrigin baked in)
• Pi-hole (was my first raspberry pi project ever! I’m still very proud of figuring this out on my own)
• Invidious (I use it instead of Youtube specifically, as a Youtube front-end, and I prefer it a lot, it’s so much less busy and thus easier for me to focus on the video)
• Yubikey (for what it works for, I just feel safer using one)

I have plans to move to a home media server where I can store my photos, shows, and music. although this is kind of above what I’m capable of, so I’m getting help.

I think it’s awesome you’re trying to get more opinions, and I hope you find things that work for you!