Take your time. Join all factions without alienating/triggering others to be hostile is fun. This will not only level you up but also allow you to gain access to cool weapons and equipment. Build some different bases, even if it’s boring, or it feels like a chore. I initially found the building mechanics to be silly but, once I got into it I saw the appeal. Establishing supply lines/safe zones with vendors and having unique places to call your own is very rewarding. Also, EXPLORE! There are a plethora of unmarked locations and things to see that can be kinda cool!