Any tips or tricks to block those super long annoying kombos? Or anyway to stop them midway?
If you're already in a combo state, there's no stopping it save for the opponent ending the combo, the opponent dropping the combo, or you using your meter on a combo breaker.
To prevent being put into combos, it's a matter of appropriate defense based on what the opponent is doing and how you're managing your risk on offense. Spacing, neutral, neutral ducking highs, contesting with pokes or quick highs, blocking high/low, reading staggers / cancels and interrupting them, jumping, using armor, using kameo reversals -- there's a lot going on in the ebb and flow of defending yourself. And that's just on the defensive side, not the offensive side.