Suggestion: Proton Drive #88
Description
A free Proton Drive account comes with 5GB of encrypted storage.
"Proton Drive’s end-to-end encryption ensures that your files, their names, and more are all fully encrypted at rest and in transit to your secure cloud. Unlike Big Tech, Proton can't access your files, so your data remains fully owned, accessible, and controlled by you." -- https://proton.me/drive
Paid plans are reasonably priced.
I have been using a paid plan for a few years now. It works well on a Mac.