If a single entry tourist visa for 60 days is granted which comes with an additional 30 days, is there currently any way to get a new visa by doing a visa run ?
TLDR : Answer Summary
Currently, due to border closures, visa runs by land are not possible. A single entry tourist visa initially grants 60 days, followed by an additional 30 days. However, it appears that options for converting to other visa types (like an O visa) within Thailand are limited based on recent information from embassies. While there are discussions about extension possibilities, including education visas and special COVID-related options, definitive confirmation is lacking, and it seems the ability to extend or change these visas is restricted at the moment.