okay,
@To**
you got some good and some BAD info on here.
Whether you can or can't get a year extension based on marriage from a covid extension totally is controlled on what entry stamp you came in on BEFORE you got the covid stamp.
As a rule you go from a tourist entry or a visa exempt entry to FIRST a 90 day non-O visa based on marriage and then you apply for a year extension.
SO how about stating what entry stamp you came in to thailand on (and when) so people can give you accurate information.