You are more than fine.
No idea you are PuBG player. The weapons are more harder/realistic in PUBBG than in Fortnite. However in Fort the problem/difficulty would be the environment / building aspect. Mostly what you see on Youtube is a full package cuz players then to show off, however you can win a round or even come close without the building part. Just keep hunting and gathering better loot, you should be fine.
The reason you will hear better things about Fort is cuz there is a more larger community of players. And this is completely normal. There are very few battle royal games, and among those this happens to be free. If for a month PUBG would become free it will take over the entire multiplayer online gaming community.
I kinda gave up on PUBG, it gets harder and harder. I started plying it around 1 year ago...since people got much better at playing the game. It is a E-sport and it very competitive. I can't keep up.
P.S. :
Does anyone here plays Forza Horizon 3 ? The game is expensive, i wanted to buy it...but it has this Blizzard dlc, that is also 20$ ...I just wanna know wanna know your thoughts on it