If you have too much water in the basement a very easy fix that might work for you is to remove anything that blocks drainage on the outside of your house. E.g. there should be a strip of 1m all around your house where there is only earth or light crushed stones, but no tiles or plastic. I have seen two houses where there were tiles in the garden right up to the house wall, and the cellar was wet. Once the garden tiles outside directly next to the house wall were removed, the humidity from the cellar wall was able to evaporate to the outside air and the cellar got dry again.

It might be a very easy fix before you start buying expensive solutions. Maybe you have old pictures of the house before there were problems and you notice there was actually a strip of garden all around the house instead of concrete or tiles.