Even if the person isn't that good you can still practice:
Hit Confirms Blockstrings (somewhat) Combos Proper Teching (Throw and Wakeup) Neutral Pressure Comfortable playing on stream with others watching you
I played more games with Jyosua than anyone else for EX JP. Even though he didn't get comfortable on his pressure game he improved on combos and hitconfirms. For me my frame traps, mixups, crossups, and combo execution went through the roof compared to how I was in CS2 skill level because I was able to practice it against a live target. For me now Im taking all that against the top players and improving my blocking, punishing, exc.
@Than I have a thread stickied in the online section with all the info.