I pass once, the opponent then plays TWO cards AND passes on his turn. WTF?

Yeah, I find Gwent really really hard especially because it's hard to decide when to pass... but I'm sure that if I spend some time playing and buy some cards from a merchant I can get the hang of it. It's just that now there is so much to do that I prefer not to play XD

I think you just don't know how to play.
I have no problem to win games. Only "big cities" are hard.

Once you pass, that was you for the round mate, your opponent can play all their cards if they want and you cannot do a thing.

Learn rules better then.

Well, I'm a boardgamer (including card games) and I got a card game which shares some similarities with Gwent.
The term "pass" is a generic term which is used to mean you are forfeiting your right to act; in some games it ends your play for the current round or turn, in other games you still get the right to act after you passed.

In this game the meaning is the first. "End round" is not so good because the round is not over, you just forfeited your remaining actions.

Yeah to me it's a bit similar to Holdem just you keep your cards though you don't play the hand.

I love the game. I'm really good at it. Just find a strategy you like best. I usually always let my oppenent win the first round.

It's not just a matter of rules with Gwent, it's the system of "passing" that should be revisited: in fact, once you pass it will be easy for your opponent to beat you by playing more cards than you (it's the same when the opponent passes and you can play enough cards to beat him). It takes also some luck to get the right cards from the deck at the beginning of the game and not being forced to play your best cards on the first hand.
It's not easy, it's pretty hard. But it's not just a tactical or strategic difficulty (that would give satisfaction when mastered), it's more of a "chaotic" difficulty (the game is a bit too much case-dependant). It's like poker, with the difference that you can't bluff.

It's my strategy too.

It's very important to trick your opponents in playing strong cards early and lose your first round to get an advantage for the 2nd and 3rd. Even if with Temeria, winning one round means to replenish a bit your hand.

Makes sense especially if you play against Monster faction with x2 for melee leader ability. However i reached the moment that i can win every play without much effort so Gwent became a bit boring to me.
P.S I play Nilfgaard faction have 8 heroes in my deck and some other nice cards like Willentenemert(dont use any cards lower then 6).

This. Play a few cards to force him to play a few. Then sweep in and beat him with your big hitters in late rounds.

No it's not because normally you should pass when you have big advantage and you see it(so you won't be wasting your cards) or on purpose to save some more cards for the next round(when i had mediocre deck i used maniquine on purpose to transfer some cards to the next round). When you make a strong deck you won't be depending on luck with random 10 drops because all your cards will be good. That is why it's also important to keep only the strongest cards in your deck and put away those that became not good enough.This is the reason why i have minimum ammount of cards in my deck so whatever happens i am sure i will get something descent even if i use spies to get some more cards.

P.S My best moment was when i lost the 2nd round and had 0 cards and my oppent had one for the third round but it was a 9 score spy that gave him to cards with 4 scores xD

I love Gwent, and passing at the right time in a round is a very strong tactic to make the opponent use more cards so that they have less cards in future rounds or for yourself to save cards that u wish to use in the next round (generally when there opponent has accumulated a high score that you will have to use a lot of cards to catch up).

The more u play the more u will learn about the tactics of Gwent.