Should I stop playing this game all together?

In the last few months, I have been working hard to get out of bronze, which I did all my by myself to Silver II, then the losing streak comes and I dropped back down to Silver III (0 lp) I did all my best, but somehow, the other team always gets ahead of me and I lost. Most of you guys will be "meh, its just a game" but I find it hard not to throw something across the room (which I chose my phone most of the time) and get tick off by anything that "gets in my way" for example I mistyped a word or the lid of the water bottle won't close properly. I just lost all the motivation to do anything productive...