We all start somewhere.
Headlines, don’t usually have a full stop or punctuation at the end.
Feel the Adventure doesn’t have any adventurous feeling about it, it’s blocky and uninviting.
I don’t know how I feel about horse riding in the sea, I’d be dodge enough on the sand! Seems more advanced. And those advanced, would they see it as cruel to horses, as I’d imagine they’d care for horses?
The text on the bottom left, cannot read it at all. I don’t know what Rentas is, as an English speaker I might assume it means rent, so what am I renting, a horse, a beach, a boat, a party?
The 3 images in the bottom right corner are good ideas, but they don’t tell the story, they are spread too far apart, and they are too small.
You need a GRAB, you need a SELL! You need Call to Action (CTA) as noted already.
Do research into adverts for tourism - best and easiest place to draw inspiration is a google search.