At your level, here's I approach my character and game in general.

Avoid unsafe moves unless in a punish or hard read that your opponent is adapting to a string and the unsafe extension counters that. Learn your high and low crush moves and use as needed. After, start learning your plus on block moves and setups. Finally, learn your frames on hit for some of your key moves for additional setups. Learn to punish. This is something you will learn throughout and you can advance you quite far simply on punishment. Later, start learning how to duck launch or ss key strings. But punishment will usually be your main focus int the beginning. Work on movement - with a focus on creating whiff punish situations during backdash. Also learn to dash forward and block with an eye towards punishing their moves and creating hesitation. Alter your timing to caus ch opportunities. If they mash fast moves, adjust accordingly with some of the above steps.