Are you sure it wasn't a complete lack of interest in invading them?
Very sure
Pretty sure. I am from Lithuania (Baltic country) and here some reasons why Russia might find us worthy to occupy again: it is hard to defend Baltic countries from Russia, we were ruining Russia’s image before it was cool to do, Suwalki corridor
Very sure.
It does seem quite likely that, by the time Putin made the decision he did in 2022 -- if he could have also grabbed the Baltics, he would have.