After jumping of my horse i just bought for a combat against some Bandits, it dissapeard, what do i do for getting it back?

Fast travel.
Your horse should be beside you when you arrive.... unless it died.

ha its walking back to wherever it thinks its its home base I think. Horses are dumb in the game like they are IRL lol

I think the horse goes to a safe place when its health gets too low. Usually it's back the road a bit. I've always found my horse again so far. If you don't find your horse then fast travel.

Edit: If you don't own the horse (you just found it) then it starts to wander back every time you dismount.

Yeah foundit hiding in a bush haha, thanks for help ppl

My horse has disappeared on me too...can't find him anywhere, stupid beast. I got off him to shoot a couple of bandits and it ran off never to be seen again!