No matter what you choose, encrypt the data you store to avoid drama.

You could take a look at wasabi. Keep in mind that I think they have minimum commit. So if you add 1tb of data, you are charged for storing it a minimum of a few months.

Backblaze b2 and cloudflare r2 are also options.

Google drive is also a decent storage platform at a reasonable price. 9.99/mo for 2tb. You can check the rclone matrix for features and alternatives.