BF 6 is unplayable

It seems that you need to get 100% accurate hit with the tank bullet before it registers it a hit even though it would make sense that the damage should spread at the same scale with the visual damage it makes. What I mean that the tank shell makes a few meters wide hole on the ground but it doesn't seem to be doing any wide spread damage to infantry. So if you miss the person by an inch, it doesn't count. Doesn't make much sense seeing all the damage it does to buildings and terrain. At least that's my experienced of being a tank driver regardless of any game mode. 
Machine guns on a tank are much more effective against infantry compared to any shells. You can use those as a driver too

I understand what you mean and I completely agree... but when I shoot with the tank, I don't shoot at the person but at the feet, at least with the primary weapon. And the hit doesn't register; if you shoot at the body or the head, it misses the target. This makes no sense to me...
Not to mention using a normal gun while playing... bots will shoot you at 1km even through the wall, but if you shoot a player at 5 meters while his back is turned, you might not have enough magazine... I mean, we're talking about a shooter game... this is a big problem.