Issue in carbonite 4 grand arena matchmaking

I only have one Gear level 10 character and I'm in Carb 4. My opponents are way better than me.

I believe your opponent has managed to (somehow) lose a ton of times that he got sorted into Carbonite 4. I'm facing a person right now whose entire team is Gear level 11+ (with Relics), though I'm winning against him with my weak teams because of first attack, while he's done entirely nothing.

Get his ally code and view his stats in swgoh.gg. If his player skill rating is decreasing, it should be working as intended (it is likely he has just returned after a very long session of inactivity, as not joining GAC events will lower your skill rating). An entire possibility is that this guy has stashed up enough materials to go on a win-streak, and this is his first ever GAC after putting up enough Relics.

Just the thoughts of a guy who was probably placed in a higher league than necessary due to somehow having higher GP than newer Level 85 players.