I bought T2 light since i read that it is fun tank to drive so let me share with you few observations.
Tank has auto-loader but the penetration is poor and accuracy is average + drum is not bit at all.
Engage ennemy as close as possible if you are on the move, or ambush at 100m behind an obstacle...
Tank is hard to drive since even it is small, it turns like a crane. maybe some heavies has better traverse ans gun traverse speed.
Are you sure you have a 100% crew? Personnally, I have a 100% one with 6th sense and Off-Road Driving and it turns perfectly.
it has terrible view-range and even worse signal range.
It needs drawbacks, cuz otherwise it's OP. I use Optics on it.. 260m+26m= 286m, which is much better.
only decent attribute is the speed, but also the acceleration is not great at all.
Are we talking of the same tank??? 32 hp/w ration is one of the bes in the game.
now you all ask, why should one buy this premium tank?
(wait for it...)
because it is tier2 and in 1/2 -1/3 battles it ends up in tier 4 battle as only one tier2 (have bilion of screenshots but it will not make any good to show it all)
once or twice i was in game, where also enemy team had T2 light, we were only tier 2
Why does it meets Tier 4? Because it's OP as **** in Tier 2 battles. Even in Tier 3 you can manage pretty good scores. (I don't meet Tier 4 as often as you)
I know it's hard.. You won't carry those Tier 4 games, but you can still scout. However this is the hardest gameplay in the game.
if you finished reading, you must have noticed it is big irony thread and never buy this thing unless you are masochist
Or that you need to learn to master it. Problems often comes from the tanker, not from the tank 
If you understand a bit French, you can read here a review.
I have no Idea of how you play it. Maybe you rely too much head-on engagements or go too fast too far, where your allies can't cover you...
Personnally, play it when I want a bit of challenge, but not too much because sometimes it requires a lot of concentration. I'd rather to drive my Locust and pwn people from afar/on the move...