I recently switched my desktop to Linux mint. Overall it seems to work well for me. The one exception is that my password manager, Keepass, won’t work. I currently use Gdrive to sync the database between devices. It works very well for this purpose. Is there another way I can sync this file as seemlessly as Gdrive? It would to work for an Android phone and Mint PC.
Second Syncthing, it is very fast, reliable, and flexible.
I used it coming from FileSync and Dropbox, and I had to change the way I thought about my shared folders to architect a good system for me. Eg: each root shared folder should serve a particular function that determines which devices it should be shared to (does this share need to be accessible in your phone? Laptop? PC? NAS?).
FYI you can set up untrusted peer sync to have your files all synching to another device (SFF device at your friend or relatives house, or a cloud server). That eliminates the concern of your house burning down, while keeping all of your Syncthing data secure and not worrying about it being stolen or accessed. If your house burns down you can connect back to the untrusted peer sync, put in your passphrase, and your data will all return.
https://t-shaped.nl/untrustedpeerencryption