I am in the same boat i recently got to diamond 2 almost diamond 3 and was there for a few days, I carried a few games and did average, then the loss streak comes along to ruin my day, every time I hit a loss streak I google hoping I find someone that has posted or found evidence of Riot doing something so frustrating out of personal greed.
I have stated on reddit that I don't mind losing as long as the game feels fair but it just never does, after that glorious few games where I can kill players with proper accuracy, then I get some players that just say that I'm either inconsistent or paranoid, but the games are not inconsistencies or anything the enemy team can literally run through my self or my whole team.
I have noticed with spraying as well on winning games my first shot accuracy can just miss the head but the second or third shot can land the head shot.
but on a losing streak my cross hair can be bang on the nape of the head but count as a body shot then the follow up shots will all be oddly far to the left or right compared to a win streak.
I don't care what rank I end up being but I just want the game to feel fair and not this artificial "omg I got to diamond 2 what an achievement" to then get rinsed down to plat 3 by god tier teams for the 6th time in a row
I can understand that some times a win streak may happen with your average matchmaking but this kind of matchmaking is happening way too often its mentally doing my head in.
I played a game called Americas army and CSGO for years for over 8 hours a day and very rarely did I play inconsistent unless a cheater was present, but Valorant just takes inconsistencies to a whole new level that it literally feels something dodgey is happening in the back ground.