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.

Do a rehearsal move. Pack everything you have into boxes. Take out from the boxes only the things you need to use. Things that stay in the box for more than 12 months are things you probably don’t need and you can donate/sell them.