Hi Sertin1200
Please don't give up, its such a fantastic game!
As others have said.. try different quests, get as much exp/ levels as you can, keep your weapons (and armor etc) up to date.
Its a turn based tactical game.. use the turn order to your advantage.. be mindful of which enemy is your next threat and try to crowd control (e.g. stun or knockdown) or kill them.
Be mindful of the separation of magic and physical armor (e.g. having your knight reduce physical then your mage reduce magic armor is usually less effective then focus on same dmg type on each enemy). Check an enemies resistances.
Use a bedroll for free heal (and buff) between fights. Use pre-buffs pre-fight.
Contact me if you want any hints about specific fights.
Cya Lost