I'm 800 rapid, should i go for Queen's gambit as white?

Yes ... The Queens Gambit is great at any level

Yes, it is a good, solid opening, where white has comstant pressure without risk. I recommend it. But at your level, the opening is not the main thing. Learn endgames end solve puzzles, it is much more important. Don't blunder pieces, see simple tactics and know basic endgames is enough to get 1200 elo

Well if you know a super good opening where you have a big attack from the opening your going to win a lot more. And if you dont know any openings you will get in the wrong side of that position very often

If there was "a super-good opening that gives you a big attack right from the opening"... why wouldn't ALL of the Grandmasters play it? Why would they bother to play anything else?

imo the only 2 responses i get to e4 are e4 and d4. for d4 i just accept then play normally. (i like the scandi btw)

An 800 rapid player could play 1.a4 1.a3 1. h4 or 1.h3 and win.

no

I meant a sharp opening where you fall for a fork or just where its very easy to mess up, the person who knows the theory would be at a big advantage

Playing an opening just for tactical tricks is wrong in principle, even if you win the game.

Look at the two outcomes:

1) Suppose that you win. You learn NOTHING from that game, because your opponent fell into a trap that you already knew. Your opponent DOES learn something important from the game... he now knows and can avoid that trap. Your opponent improves as a chess player. You do not.

2) Suppose that you lose. That gives you the opportunity to learn something from the game (ie: "stop playing for traps") but you could have learned that lesson without losing any rating points... just by listening to the advice of more experienced players.

The only positive outcome possible when playing for traps is the TEMPORARY possession of a few extra rating points. Temporary, because over the long term your rating tracks your playing strength, and if you get over-rated by using a few cheap traps then you will get paired against stronger players and will lose those points again as soon as you fail to lead one of those stronger players into one of your memorized traps.

A better idea is to actually LEARN how to play chess properly. Granted, that takes a lot more work.

Study endgames (K+P vs K, K+P's vs K+P's, K+R+P vs K+R, K+R+P's vs K+R+P's, etc), model checkmating patterns (Lolli, Greco, Corridor, Epaulette, Boden's, Morphy's Smothered, etc), tactics (Pin, Fork, Skewer, Overload, Interference, Sealing and Sweeping, Line Cutting, Line Opening, etc).

This is a guaranteed process to keep you at 500.

the old variention will trick your oppennets off guard

Not saying that you should play an opening just for tricks, but that you should know some theory in the opening you play so that 1. You get a fairly good position and 2. You dont fall for 1 of many opening traps