As Ragnarok said. It's usually quite helpful to read a little bit about games you buy (preferably before you buy).
There is a mod which allows you to avoid the capping to level 4:
https://www.nexusmods.com/baldursgate3/mods/118I'm currently using it, beware, getting to lvl 5 (wich is a huge power increase) trivializes a lot of the fights in the EA game. To have it for the Gith fight, this terrible and bugged underground monster and the horror hooks is nice, however, in my opinion. Also Bernard is easier in a pleasant way.