Firstly there was never a "COVID VISA" it was a Covid19 extension of stay.
Issuing was finished at the end of September.
You may be able to get a 30 day extension of stay, ONLY if your embassy will issue a letter stating that you cannot return home because of the Covid situation there. This is near impossible now.
AND that would be totally at the discretion of whatever immigration office you go to.
Phuket immigration will consider applications on a "case by case" basis.
The only embassy issuing letters are Ukraine because of the "war" currently.