Impossible. The entire Russian airforce was destroyed. I read it here last week.
Where? Please document.
What IS true is that if you read the Russians’ own propaganda, Russian fighter planes are generally only active in contested areas after Ukrainian SAMs get taken out. For example:
https://freerepublic.com/focus/f-chat/4104662/posts
This may all boil down to whether Ukraine gets enough SAMs to replace losses, and / or receives effective anti-drone weapons (aside from conventional SAM’s, and / or drone shipments to Russia are interrupted.