It's literally impossible to cover every single possible situation, option or optimal combo, however with good understanding it should be possible to figure out what can and can't be done. It's also advisable to keep watching footage and learning what people do and when.
If you don't know how damage works in P4U2R, it is recommended that you read the Dustloop page . Specifically, knowing roughly how proration works is crucial to understanding this section. Knowledge of damage/hitstun scaling, as well as the effects of crouches, counterhits and fatal counters will be incredibly helpful in understanding how and why things work, and will stop you making any major mistakes if you're forced to freestyle.
