As said already Non O based on retirement. No insurance required. Dump money in the bank. Do your 90 day reports (required by everyone) and that’s it. Renew/extend next year for 1900 baht. Or hire an agent and not have to do anything. They go to immigration for you for the extensions and the 90 day report.
Personally I could not care less If someone wears a mask or not. I will not wear one unless forced as in the past. I have been in government offices, hospitals and of course all the regular daily activity places and see plenty of Thais with no masks.
But my question is if you are so concerned that you still wear a mask, but it’s on your chin, what’s the point?
IF you believe a mask works for it to work it has to seal around you nose and mouth. So otherwise it’s just virtue signaling.