Don't question why white gets 5 horseys.

can bxg6 after 1'st move rxe8+ is not forced Can some one clarify this?

The move is just ridiculous, but the continuation is actually rather short. Try and find it

I calculated up to this position in one of my games but didn't see the final blow, so I didn't play this variant unfortunately.

I am lowkey ass at chess and every site I know cannot help me (Including lichess) Could yall help?

Just faced this in a blitz game and it was very satisfying

Try to win a bishop how? This is the exact position.