The thing is, competitive mode is by principle a team based competition, there is a moral code to work together. It is not the pro league, but it does have standards to abide to and that is why there are reporting mechanics to steer the game into a positive direction, and also lately by adding Prime to ‘authenticate’ the true players.
Solo is not an easy approach to competition; it is a gamble to be stacked with an ‘competitive’ team. The match making is scratchy at best.
It is okay to mute the toxic players, but you need to continue as a team player. Once the team is broken then you are going to have to sit through unwanted rounds, only to complete the match without suspension.
There is also an issue where many players think that they know better than you. The issue is simply that the team is not playing according to roles, that is up to the players to nominate and the team’s caller to decide. This hardly ever happens… one reason why I YOLO in the lower tiered ranks. Then there are players which are under the impression that competitive mode is all about the player leading with the most kills…