A Simple Question

What exactly do you practice on in training mode to get better? Have a nice day.

Combos, setups, how to beat things you lose to, what to do in certain situations, etc.

Combos, spacing, timing, punishes. If you haven’t tried it yet, try inputting some combos, cross ups and tick throws using the record/playback function in the start menu and then work out some reliable counters and punishes for them.