How do you fight while you are on a horse?

When fighting on horseback, if you have a spear, continously hold the block button while galloping at high speed. You will see a red crossair. Release your finger from block. This will give you the ability to charge. Aim the crossair at the enemy and deal insane damage. Once you succesfully dealt damage, repeat the steps above to charge again. This is by far the best way to fight on horseback. I don't recommend using a sword on horseback as you need good timing to actually hit your opponent. Archery on horseback is equally bad as your aiming will be highly affected unless you have max level accuracy. Forever, if you really want to try out horse archery I recommend you to ONLY use BOWS. Crossbow on horseback is super frustrating as it doesnt give you time to aim properly before firing.