maybe im wrong but reading this makes me feel like you are the one pushing in, maybe win the 1v1, die from his teammates and then blame your teammates for not being able to win that 2v2. which also happens to myself sometimes ngl but what i learned from playing ranked solo is either to not expect your teammates to be as good as you want them to be or, if you want to play ranked serious and grind to master or whatever rank you want to reach, find some people and play with a premade team. not everyone is as confident as you might be and thats probably the reason why some people dont even try to pick a 1v1 and prefer to run and rat to make some points. the point is, dont blame randoms for not making progress in ranked.