JgPzE100 - Keep or dump?

DomoSapien: The Jageru was my first Tier X. Needless to say, I was disappointed when I got there, partly because Tier X is way more difficult than my inexperienced self had anticipated, and partly because the Jag has a very difficult playstyle.

She's not the best in virtually any regard, more of a deterrent force than an actual dominator on the battlefield, but if you park your Jag in an alleyway, people are going to think twice before poking.

Should you sell it or keep it? Honestly, it's hard to say after 10 battles. You already spent the Credits to buy the tank so you might as well give it a try for at least like 100 battles. When it comes to angling, you really need to over-angle the armor to maximize effectiveness. The cheeks on your superstructure are vulnerable to HEAT so much like an E-100 needs to angle its turret, you need to angle your chassis. Check the armor viewer on Tanks.gg but I think you can get away with angling up to almost 45 degrees.   The Jag's playstyle requires a vast amount of game knowledge and forethought. You are a slow, hulking behemoth. If you choose the wrong flank you likely will not have time to reposition before the vital flank collapses. The 22 second reload will cause you to constantly second-guess yourself when presented with a risky shot, and half the time you will flub the risky shot only for a much better one to present itself a few seconds later.

TL;DR - Play some more battles before you decide what to do with the tank. It's definitely one of those tanks where all the stars need to align for you to have a monster game, but when they do align and you do have that monster game, it is oh so satisfying.