Things like:

• (Trivial) Change the flavor text on the ability explanations to also briefly explain how the abilities are supposed to be used. "Here's reyna's blind and how it works. It can be used to push opponents and locations aggressively with added protection". Single line stuff.

• (Easy) Splash screens during load times with tips on them. Instead of showing nothing during game load, and just showing a picture of the map during match load, show a cycling series of splash screens with little tips. "Jett's dash can help you get onto site quickly, and escape quickly if you're in a bad situation, or reposition yourself to catch enemies off guard!", "phoenix and reyna's flashes can be used out of smokes to help approach through them!", etc, with little diagrams showing it.

• (Marginally non-easy) Collect all these tips splash screens together in some menu in-game where you can look through and view them all, if desired.

Put enough of these in the game, with players seeing them every single time they log on and every single time they load, and awareness will begin to spread on how to actually play these agents correctly. It may not be full-fledged tutorials (god forbid), but it'd be so much better than the current absolutely nothing, and if the players of the characters themselves don't see it then they'd at least have teammates who could remind them to do it, instead of just frustratedly banging their heads against the wall playing incorrectly in ignorance and never knowing why they're losing or even knowing that they're throwing for their team.

Ultimately I don't entirely blame all the awful instalock duelists. It's miserable to be stuck on teams with them, but at the end of the day there's absolutely zero information in the game itself on how to play these characters. The only way to find out is to look at external resources like youtube or whatever, and even then there's tons of fluff to wade through before you actually get something informative, and even then only people who are actively seeking out information will see it, and even then it's limited internationally by what language the youtubers use.

Current text says what the characters' roles are, but it doesn't say anything about why specifically that character's utility allows them to fulfill that role. Any of these changes would be leaps and bounds beyond what we currently have, and would hopefully alleviate this problem.

Currently riot is depending on youtubers or whatever to teach people the game, and that's absolutely lazy and results in nothing but suffering for the playerbase - who have to deal with every single player who isn't actvely seeking out game knowledge (ie the vast majority of players) throwing every game, and making the low ranks a complete and utter living hell.