Sports betting limits: do they target winners or is it random

so i’ve been mainly on blackjack for years but recently shifted more into sports betting, just grinding out small edges. last couple months, i noticed i’m getting limit cuts way faster than i expected. i haven’t hit any massive scores or had crazy hot streaks, just steady small wins with some correlated parlays and live betting spots. feels like i’m flagged for something but no clue if it’s just the system picking up patterns or if every decent run gets dinged.

not sure if i’m just unlucky and ran into automated sweeps or if they really dial in on people who win even a little. i know casinos usually don’t like it when you play sharp on blackjack, but sports betting seems way touchier. is anyone else getting limited even without huge wins or obvious “sharp” plays? what triggers limits for you - pure winnings, bet style, timing, or something else?