taking green rook giving up your 1pt queen was bad
Need help on strategy

I played a game yesterday
https://www.chess.com/variants/4-player-chess/game/32984567/84/1
On move 25, I was probably winning. Soon, I made some terrible moves and if green didn't spare me, I wouldve died. Any tips on how to play these positions?
just dont make the bad moves

I had the most material and green was weak
That doesn't mean you were winning, it just means you had an advantage.
As for strategy, you didn't really make "terrible moves", you just didn't have a good plan and let yellow get too powerful. I think your biggest problem was neglecting your king safety. For example, instead of 13.r g3, which trades a bishop unnecessarily, you could have played h3, e3, and Be2.
And generally, it's not good to attack one player too much. Yellow had 3 queens and several chances to mate green, meanwhile you were still focused on attacking green, who was not the real threat. Around move 35, yellow had no real weaknesses and so that's where you should have directed your attacks, with moves like 34.r Qi10 or at least stopping yellow's f pawn to show green that you want to keep the balance and aren't just throwing the game to yellow.
Hi!
Yes, you probably don't want to take that rook, seeing as your opposite probably won't help you there and you aren't in a desparate" position. The other issue is that yellow has a fair amount of queens; this wouldn't matter if you were able to get a mate on green, but the position is kind of messy. You also lose the queen there. Finally, if yellow doesn't help, well, you've just ensured that you have the worst position out of the three.
Generally, I wouldn't bet on my opposite helping me in the three player stage a whole lot. That is more general advice than pertains to your move.
So I wouldn't do that move, probably. You do want to do those kind of moves; with your points advantage you can often manouver things so that you can get the mate and win; I don't think that is a position you can do that very well, however.
Looking at move 29, obviously you have the points lead so you have to know and aim for getting a mate and winning. Your position isn't awful, but I don't like it that much; it feels relativily easily exploitable to me. I don't know how much you can do about it there. But you want to aim throughout the game to have a stronger position than you have. But of course, it is really hard to do that.
Nor did it matter; you have the correct strategic ideas, I thought. Generally, when yellow attacks green, you want to either get the mate on green or give yellow the mate and go into a slightly unequal 2 player ending.
Because of the specific position, I don't know if that is correct or not, for the reason of what kind-of happened. Yellow got into a much better position, and green was still around, and potentially angry. On the other hand, you eventually got the mate on green.
tl;dr In this situation, generally, you only want to attack green if you (or yellow until he started pushing his pawn) can get a mate.
Just so you know, you also had some mates on green that you past up which would have won it earlier. Of course, it is hard to see. I'm not sure if you should attack green (if you can get a checkmate in other words).
I would say, be careful making attacks that give other players a better/position or win instead of you. Also, practice your visualization of attacks and such; if you do this, you will soon have a big advantage over other players.
Finally, congrats on winning! You made a lot of good moves, had good ideas strategically, and outplayed yellow in the end.
Another way to put it is that you should attack green if and only if you can either 1. mate him or 2. give yellow the mate and have an equal position. Everything else loses.

here's how you play botez gambit and your opp attacking you
I just had a game like this today
https://www.chess.com/variants/4-player-chess/game/33020598/384/2

always attack across
never attack across. Thats why people get 3rd.
please note the username, when the account was created, and the troll comment, and then reconsider before you try to explain further
Disregarded. Remember YT4PC? That's him

always attack across
never attack across. Thats why people get 3rd.
please note the username, when the account was created, and the troll comment, and then reconsider before you try to explain further
Disregarded. Remember YT4PC? That's him
that's what i was saying
In other words, don't talk to walls
I played a game yesterday
https://www.chess.com/variants/4-player-chess/game/32984567/84/1
On move 25, I was probably winning. Soon, I made some terrible moves and if green didn't spare me, I wouldve died. Any tips on how to play these positions?