Mwk Honestly, I recommend encrypting your files in the cloud yourself with something like Cryptomator or Picocrypt rather than trusting their server-side encryption, they still hold the decryption keys.
Google One is reliable and that's what I'd recommend, the prices are very fair (I can't give them to you because I'm in euros), you can use 2FA and the Android app, as I mentioned before, you should encrypt your files yourself.