Ran through this thread real fast and I can only suggest you the things others has suggested already (be aware that higher tiers are entirely different than lower ones, work on your gameplay, adapt better to new situations, etc.)
The most important thing though, is to try and have fun by learning the game, not by making new accounts.
I can't imagine how registering new accounts to have better stats is fun. Some good players are doing it too to hide their old performance and I always found it to be ultra pepega.
Getting good in a game is a natural process and it's okay to take some time for it.
Don't want you to feel bad about your performance but consider this:
This game is generally incredibly simple. Even in high tiers. If you ever saw how complex MMOs work and how much effort they need even to play you'd know.
This is a casual ship game with very simple mechanics under the hood, once you understood them, you'll git gud. Maybe not super unicum gud, but high tier green guy gud.
I would suggest you to:
- watch educative content on youtube or twitch
- find out what your ship could or should do in a certain scenario
- play with better players so they can teach you positioning, situational awareness, target selection
After you have the basics, only then you should install some additional mods that gives you more information.
As of now I wouldn't recommend them since you struggle to process the info that gets to you now, but, after some time, every plus info will help you make better decisions.
TL;DR: put the tinfoil hat research energies into learning the game and all will be fine. If not: who cares? The game is not for everyone, but I think if you can drive a car you can play this game on green-blue level.