I cannot play League competitevly because there is no element of comeback

When you are behind in league. You are behind. It is impossible to do anything at all when the enemy team is ahead. This game has turned into people wanting a quicky before they go somewhere. People want faster games and shit like that. I for one have no issue with long games. I play CSGO and those matches can be 90 minutes NOT including overtime. Overwatch has longer ranked matches as well. However, long games aside, CSGO and Overwatch both promote comebacks and they are great opportunites for players and teams to work together and come back when they are down a point. Now I understand league functions based on gold income and who gets the most gold to buy items but to put it simply, CSGO has a similar system for buying equipment and Overwatch I can say is purely based on skill and team cooperation. In both ways, even if you have the skills in league and your team tries to engage and kill the adc and try to get objectives the enemy team is so far ahead it's impossible. Looking at LCS. I see teams always looking to try and get some gold back and make desperate plays but its all hopeless. Enemy teams have HUGE margins for error when ahead. Im sure many people have seen CSGO matches where you can come back from a 13-2 and still win the game. Naturally CSGO prevents snowbally leads because of their economy system. Why can't league do something similar?