Immigration did not change rules, regulations and requirements due to covid, other then an extra Extension of Stay for those who could not travel back home.
The tourist visa is good for 60 days and you can apply for the 30 day extension of stay based on tourism.
Best option is to get the Non Immigrant B visa or the Non Immigrant O visa based on marriage before you travel and extend that while inside Thailand, both can be used to obtain the work permit.