I know spike rush is implented to have fun with friends/solo but there should be a gamemode that have best of 4/6 and its like unrated.

Its fast and can warmup your brain

People here will say play deathmatch/unrated. Deathmatch is good but im the type of person that wants to practice skills (aim,gamesense,utils) and unrated is very time consuming also

Hope riot implement a gamemode like that its one of the best ways to practice