Aloha,
So some days you will have winning streaks and some days you will not.
Myself, with an overall of 56% W/R across something like 12k battles. I have had days where I had a 95% W/R across 15 games and then the next day a 30% W/R. It is the way of online gaming.... Ebbs and Flows.
Also, currently since everyone is stuck at home you have a higher than normal server player count, with A LOT of people still learning how to play. If you are getting super angry over a game, I would suggest a breather and coming back to try again later.
All that being said, please be careful of the personal attacks, your OP had little to no information to go off of and the community is attempting to solicit more information from you (albeit not the best way sometimes).
Mahalo,
-Hapa