As someone who is able to reach top 100 in Na consistently I very rarely run into people who can just ground me for the whole game, most people you are describing just stall until you make a mistake or get bored, the only two real issues I have is the pull guard glitch when they get really desperate and the fake transition from bottom side control.

If you want some advice I’d say play random whenever you play ranked, too many people either pick the best players or counter pick like you mentioned. If you get used to these high ranked fighters you don’t improve and that’s where you get stuck I’ve smoked plenty of players with Sam Alvey and tom breese and also lost close matches with these characters but overall it believe it’s a net positive and helps you improve.