I recommend Mint over Ubuntu, the snap issue does not exist there.

> And don't tell me that Linux doesn't need antivirus... you sometimes log in on public WiFi networks.

This is a misunderstanding of the threat model of Wifi. Stick to software from the signed repos and SSL. Avoid attachments, keep updated. I've never used antivirus with Linux, despite working on symantec antivirus back in the day.