When I flush the toilet, the water rises very high. It also takes awhile to flush down. But everything goes down (urine solids, toilet paper, etc) is there a way to have the water level not rise as much? I'm afraid it might overflow one day.

You have a partial blockage in the drain line from the toilet. Plunge and/or snake the drain with a closet auger. You may have to pull the toilet and work on the line from there.