password-store is a CLI app to store passwords and even supports OTP.

Whoogle is a meta search (still uses Google search) that takes the bloat off.

Matrix is a decentralized and secure messaging platform.

For email I have a vps (costs less than protonmail) and use Maddy.

There are a few good firefox alternatives, I use waterfox on my phone and floorp on my Linux PC.

Atomic Habits is a good book that might help you (or not).

I use daily habit tracking for my self-care (and also my hobbies). It’s not for everyone but it keeps me grounded.

I don’t know about Linode, but with Hostinger you get a resource cap on CPU usage. If you put your VPS to crunch something you will be throttled down on CPU. I once tried importing Wikipedia on my VPS and had my CPU throttled down. I pay for the cheapest VPS with only one CPU. In this case you don’t really get the “full” VPS to yourself…