I feel like I cannot work with a lot of the people in this game

So every once and a while when you're playing league and you're trying to do really well and just win the game there, will be miscommunication with your team. Say I'm a top lane Shen and my Jungler is currently doing blue buff, and I ult in bot to go help out with a fight, and then I ping for assistance in top lane because I don't want the enemy top laner to push and damage if not take the tower, but my jungler ignores the ping and goes to take wolves or scuttles or something of the likes and my tower falls. I may be a little bothered and ask my jungler "Hey, next time when I ult somewhere and someone is pushing the lane I was in could you fill in for a sec so we don't lose towers?" Most of the time I feel like they take that as a personal attack on their gameplay and in turn try and start an argument with me, or they just don't respond at all. Maybe once every two weeks will I meet people who I feel like are just genuinely trying to work together with others towards the common goal of destroying the nexus. There's a lot of competitiveness to this game but I hate that everyone just automatically assumes that I'm just trying to call them out as a bad player or something. If you get matched up with this random person who you've never met nor will ever meet again why do feel the need to make yourself look better than them? It just annoys me when people get hostile towards their teammates, especially when they let it appear in their gameplay. It doesn't matter if that Twitch just took Gromp with his passive, if the Vayne with smite that's going devourer is taking your camps, if that Taric with ignite and a NLR just stole your kill, you can get off your high horse and try and work with them to win the game. League is pathetic sometimes with how personal people take the game, I was recently in a ranked game. I was the jungler and I was stealing the enemies blue buff with the top laner after a dragon, and I pinged for our mid laner to take it, so our top laner quit. The entire purpose of the game is to work together with people and every day I'm find myself with people who are trying as hard as they can not to.