I use pass for password management. It has companion phone apps where necessary, and doesn't rely on a third party for storage and encryption. If you're not familiar with gpg, setup can be a bit of a pain, but I prefer it to other options. It also follows the Unix philosophy of small tools that have limited scope and can be composed together.
I came here to say this. Using GPG you can have 4096-bit encryption, and pass gives you a git repo of your passwords, which is really easy to work with in practice.
I've moved this setup across maybe 8 machines and it keeps working very well.
If you need help coming up with good passwords, I made a thing for that too
I will try to use your recommendations in parallel, to conclude which application makes me feel more comfortable and organized
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