@gg123xyz1. Why do you need a riot shield? because you don't.
2. Early game start looting, open the crates around the buildings to get some floor loot first and collect money, (you can't even miss them because they generate a sound so you can locate where they are)
3. Once you have money, you can buy your loadout at a buy station, it is marked as a shopping cart on the map
4. Also 2 important tools needed, buy a self-review kit, and a UAV
5. Once you have all of these start pushing people, get a vehicle a truck if its possible because it's harder to cause damage to it
6. If you are playing solos in this game you have to be strategic, once the first circle closes you have to plan your rotation carefully
You just don't like the game because I am guessing you are new and you don't really understand it yet, everything comes with time
PS: also make sure you always well-stocked on plates