Take it from a plumber.... Nine times out of ten it is a grading problem. Add topsoil and plant grass against the house and pitch away from house. Extend rain gutters and next time it rains... go outside and make sure they are not clogged and overflowing like a waterfall. Get the water away from the foundation. I have changed hundreds of sump pumps in my career and installed many water backup pumps and battery backup pumps. Liberty in my opinion makes the best pump. It is more of a failing sump pump switch than the motor itself being the problem. If you have a window with a dug out well, get a plastic dome.
Make sure sump discharge is away from the house so it does not drain back through the outside wall and come back into the pit.