Tactics Training vs real games

I've practiced a lot of tactics lately. Even when I get a lot better at tactics, my games do not improve much.

I figure out it's because of their innate differences:

1. In tactics training, you know something is in the position, you try to figure it out until you find it. In real games, maybe there is no tactics in the positions but every move you spend a lot of time finding it and it wastes a lot of time.

2. When I do a lot of tactics, I start to think that tactics happens a lot in games when it only happens a few times. In tactics training, you can use strategies like "Hey those moves do not work, so this moves must work" and get the problem right. However, in real games, it is : "Those moves do not work, and this move does not work, either. None of the moves work. There is no tactics here." Sometimes, I think like in the training and make mistakes because of this.

What do u guys think?