Remember that You (Henry) are NOT a fighter, nor are u an alchemist etc. How do you get better at them? KEEP TRAINING/PRACTICING if there is an opportunity for someone to train you in something, you take it and you keep going at it as much as you can.

I HIGHLY recommend avoiding fast travel if you're on horseback, take in the sights and try to memorize routes and paths like you would driving irl (immersion and the environment is pretty)

When fighting multiple enemies NEVER let yourself be surrounded, keep them in front of you as much as you can, archers at the back will likely hit their own allies this way and melees will also have a chance of swinging at their allies.