Also, I went into Jelek without a backup save and now I can’t get out without dying. I didn’t do gargareth before and find the hidden Dragonlance in the other town. I thought I could do some Jelek first but I didn’t realize you can’t leave untill you are capable of killing everything. My last save is from 4 hours earlier so I’m permanently stuck in Jelek.
How could you not do Gargath Outpost? It is the area straight after Throtl. In fact, you don't move to the next outpost until after Gargath is done, and only then do you get the mission to go to Jelek.
I did go but I then, I wanted more EXP and better stuff so I went to other places instead.
Plus, I didn’t know I would get stuck permanently in Jelek.
OK. I know this is counterintuitive because of the way modern games are, but GB games are 1st Ed. In that, the XP you get from fights is
fixed. It doesn't matter what level you are. You fight the same fight at level 1 or level 40, and you will still get the same XP.
There is no point fighting tougher encounters!
I killed a single Hill Giant and got 500 EXP from the 1k platinum they drop, that doesn’t matter? Draconions and fighters in the first dungeon gave like 100-200 EXP, hobgoblins even less?
Not if you keep dying from it. Remember this if you play a Elf heavy party: You can't Raise Dead them. You have to wait until Resurrect before you can bring them back. You don't want to run the risk of getting your party members killed by fighting encounters you are not ready for yet. Get to a point you can comfortably kill stuff, then start hunting them. Until then, hunt lesser creatures.
Don't force encounters you are not ready for yet, and especially do not enter areas you are not ready for yet. This goes doubly so for DKK, which is very open sandbox and you can get killed fairly quickly if you wander into the wrong place with a party not ready for it. And yes, there is at least one place in that game also where you will be trapped unless you can fight your way out. DQK has another, but by that time, you shouldn't have a problem fighting your way out.