The king has lost his castling rights
the worst openings and variations

Sacrifices the important g pawn for nothing and if black placed e5 instead of d5 black can checkmate

Nothing but an useless fianchetto and does not protect kingside, if black then plays Qh4+ then white’s kingside gets DESTROYED

It is a variation of the barnes opening
Same with #5
You clearly never studied this opening.
https://halloweengambit.jouwweb.be/win-with-the-halloween-gambit
Sacrifices a knight for a pawn and that is not reasonable.