Mine is a 2017 model. It is a hybrid so there are more electronics. The battery is stored in the trunk and that may be why it’s AGM, if I remember correctly the lead acid batteries can let out some pretty toxic fumes while charging!

Can confirm, am also RAV4 owner who had to pay $350 for an AGM battery.

Cryptomator might be a good option. They have clients for Windows, macOS, and Linux. It’s designed around encrypting your cloud storage but nothing should stop you from using it on a USB drive.

Considering how many data breaches have happened this year alone, I wouldn’t be very surprised if your phone number was leaked in one of them, along with your email address. Make sure you use unique passwords for all your online accounts (a password manager can help with this).