why do i keep losing chess game
I know what you mean, theamazingzone123. I always get so mad at myself when I keep making mistakes because I feel so stupid. What helped me was to play the hardest computers with material odds. They see every mistake you make and punish you so you have to play carefully.

i don't know why i always suddenly got checkmated or losing the queen i keep losing every game i have since i join the site why?
its make me hate chess because i hate to lose games like that
You're losing because you are dropping more pieces to your opponents than they are dropping to you. If bullet chess is your main game, it may be hard to improve at that speed because you do not have the time to develop board vision and the discipline to look at the attacks of each enemy piece as the board changes as well as ways to grab an enemy piece.
I suggest you try, at least, rapid chess for a while or even daily chess.
i don't know why i always suddenly got checkmated or losing the queen i keep losing every game i have since i join the site why?
its make me hate chess because i hate to lose games like that
You're losing because you are dropping more pieces to your opponents than they are dropping to you. If bullet chess is your main game, it may be hard to improve at that speed because you do not have the time to develop board vision and the discipline to look at the attacks of each enemy piece as the board changes as well as ways to grab an enemy piece.
I suggest you try, at least, rapid chess for a while or even daily chess.
Has theaamazingone123 been around since 2012? Anyway:
"..., you have to make a decision: have tons of fun playing blitz (without learning much), or be serious and play with longer time controls so you can actually think.
One isn't better than another. Having fun playing bullet is great stuff, while 3-0 and 5-0 are also ways to get your pulse pounding and blood pressure leaping off the charts. But will you become a good player? Most likely not.
Of course, you can do both (long and fast games), ..." - IM Jeremy Silman (June 9, 2016)
https://www.chess.com/article/view/longer-time-controls-are-more-instructive
Most of us lose because we give away more pieces to our opponent than he gives away to us. You (and I and most players) will win more if we stop giving away pieces - or at least work on reducing it by improving on overprotecting pieces, tactics, gaining space and tempos in the opening, etc.