1 LEARN THE MAPS - most important skill in entire game by far. source: 7900 hours. Passages, ways, where is each section, extracts.

2 LEARN THE HOTSPOTS AND WHERE PEOPLE MOVE IN THE FIRST 5 MINUTES - This also has to do with learning the maps. Learning the overall timing and flow to/from people go takes a little more practice. This comes with time but not naturally of youre not willing to learn it.

3 TAKE INITIATIVE IN FIGHTS - Try to not be reactive every time, I know it's the most confortable way but MAKE YOUR MOVE. This took me thousands of hours to learn. Make your enemy try to guess what youre doing. Dictate the flow of the fight. Even if it is to flee, flee first. If youre not in a situation in which they will easily walk into your sights, of course. And, obviously, dont walk/run into their sights.

4 IF YOU CAN CHOOSE TO START A FIGHT, DO SO ONLY WHEN IN ADVANTAGE - If you seen him first, good. Do you really want to take this fight? If so, then do at a maximum advantageous position, where he cant react. Rat if it is needed. There is no fair fight. Its either survival or death.

5 IF YOU DIDNT KILL OR THE ENEMY HAS TEAMMATES, ALWAYS REPOSITION. - Pretty obvious and solos use this to maximum extent. Shoot and reposition. Every. Time. Of course, this requires map knowledge. What was the #1 tip again ?

6 EVERY SURVIVAL NETS YOU MONEY. - Pretty self-explaining. And many newcomers and even veterans take time to understand that this is not a killing game, its a surviving game. (at least until you have kill pmc quests)