Greetings! I'm going to describe some of the important tactics in winning a match of PlayerUnknown's Battlegrounds (solo mode).
Solo in PUBG is quite different from the other modes, as you have no one to rely on and speak to, so whilst you don't have another set of eyes (or three) to help you scout enemies, it does let you be more focused on your own thinking, and be more individualized. When in Solo, there are always a set number of goals you should attain before there are 50 people left. Here's some equipment goals.
A level 2 (or 3) backpack - Backpacks are great, because they let you carry a ton more. Level 2 backpacks are even better, and let you carry substantial amounts of ammo. Level 3s basically let you take anything you see.
2 Primary weapons - this is important because when you get to top 50, the circle is going to start enclosing much faster, so possible opponents are going to be closer by.
Lots of grenades - it may not seem important, but you always want to be stocked up on grenades, because they kill disable enemy sight, movement, or if you're lucky, kill them. Make sure to pick up any 'nade you see!
A reliable vehicle* - Vehicles play an important part of this game, so be sure to take one if you see it. *If you land in the middle of the white circle, you don't NEED one, but it's always nice so you can more efficiently loot the middle.
A 4x (or higher) scope - 4x and 8x scopes are always hard to find, but if you find one, don't hesitate to take it. If neither of your primaries can use a 4x scope, get a new primary! This will help you to have a better range when shooting at enemies.
Level 2+ helmet and police vest - These give you much more protection from enemy bullets, and could mean the difference between 12 health and zero health. Find them! They can keep you alive in dire situations.
Healing items - Medkits are awesome, but hard to find. First Aid kits are easier, and heal a ton, which can be very helpful when on low health. To finish up healing after these, or maybe give you some extra stamina, get energy drinks and painkillers. If you are wounded, but don't want to waste these, get bandages, because this is where they shine!
That's it! With these, you are set to win. Now, there are of course the tactical goals. When the circle begins to close in, make sure you're on the side with the least area between the blue zone and the white circle, so no one can try and sneak behind you and easily pick you off. Additionally, you want good weapons, so to expand on the 2 primary weapon goal, I HIGHLY recommend you find a Mini14 and equip some sort of scope, 4x or higher on it. A good second primary is the M16 or M416, with any sort of scope from red dot sight to 16x. Speaking of 16x, you CAN find them, though it's hard, in drops. These are spotted with big flares and a red box floating down from a big jet that sometimes flies past you. When trying to capture items from a drop, you need to be aware of your surroundings,
make sure no one is within visible range, and right click ALL THE THINGS into your inventory, make sure you have a vehicle faster than the Dacia, and GET OUTTA THERE!
Once all of these are done (hopefully), and you're in a 1 square kilometer circle, it's time to SNAKE! "Snaking" is essentially pressing "Z", and crawling around the edge of the circle to various trees or rocks that will give you protection. Once there, make sure no one spotted you, watch enemy shots (and listen), and don't make your move until you ABSOLUTELY HAVE to! This is IMPERATIVE in order to win a match. Lastly, if you DIDN'T follow all these and ended up in the tiny circle with 30 people or less, (or didn't have time/couldn't find anything) then do what I just said above, but even MORE so sparingly. Crank those stealth levels over 9000, and find the best cover you
can without being seen. If you're seen, then you lose. Don't fire a SINGLE shot, and throw ANY grenades, until either there's less than 5 people alive, or you see an easy shot where no one else can you fire. Good luck, and may the best get a Chicken Dinner!