Visit for 90 days: OR the Non Immigrant O visa based on being over 50 years of age, which gives you 90 days on entry.
OR the Single Entry Tourist Visa which gives you 60 days on entry and can be extended once with 30 days on basis of tourism.
In 2024 a long way ahead, but the retirement visa also know as the Non Immigrant O visa based on being over 50 years of age from the Thai Embassy and when arrived in Thailand apply for the 1 year retirement visa also know as an Extension of Stay based on being over 50 years of age at the local Immigration Office.
The system is not to change your address, you do that with another app or in person at the Immigration Office with the house owner/landlord within 24 hours after arrival.
Easiest option to stay maximum 90 days is to apply before you make your way to Thailand at the Thai Embassy for a Single Entry Tourist Visa. This visa will give you 60 days of stay on entry and can be extended once with another 30 days based on tourism.
Everybody can apply and the decision is made by the Immigration Officer.
Telling the Immigration Officer that you read on Facebook that other people from other countries with another history of stay inside Thailand got an extension does not give you any special privileges.
I close this down to avoid more stories about other nationalities using other Immigration Offices which has no added value to this question.
You can apply until 25 July for the Extension of Stay based on being unable to travel.
BUT the decision is made by the Immigration Officer and as you might noticed, land borders are open again and people do manage to leave the country by airplane.
make sure you have a plan B if your application get denied.