I managed to get into Urbish Mines level 2 and explore "everything" except doors that are underwater. I cant get to those doors and go trough them and i cant find any other way to get out from level 2. Is there a way out from there without going trough tat water or am i stuck here and have to somehow find save from before :(

From memory, there is a water pump on level 1 that you can activate (it needs some coal to power it I think). This should open up some new areas.

I don't go on forums much, so I'm hoping you're still not stuck on this. part. The goal is going to be the locked door at the far left side of the map that you cannot pick.

https://static.wikia.nocookie.net/lands-of-lore/images/4/47/Urbish_Mines_lvl_2.png

To get the key for this door, you'll need to go to the spot marked "Gas Smell" the use either the fireball spell or a wand of fireballs here. This will blow up the wall, so that you can get to the niche in this area that has the key to that locked door.