Sealion 7 AWD suspension change

It's been a while I bought Sealion 7 AWD version with FSD (frequency selective damping), no Adaptive suspension. It is a bit stiff and firm on small, sharp potholes. I can feel with my back every sharpness on the road. However, I dont like it. Anyone had the same exp and what was the solution? The first thought came to me is to buy a coil overs. But, what kind of, idk. Which brand is good and can give me a better comfort (soft ride)? Any feedbacks on that? Thanks