Here I will upload some openings regarding to 1. Nf3.
So, here 2.e6 was a mistake, which allows for a white attack pawn on c7 or a7 to have some material advantage.
We can see that here black gets some compensation, but white feel better. White pawns on the lines g and h have some perspectives
A lot of players make this kind of mistake, especially in the bullet.
for e3 there are dozens of openings, so in the future, I'll upload some openings related to that.
if in 5. instead of e5 takes on e4, white has a powerful pawn on the d line, which allows just push forward in order to mate.
Here I will upload some openings regarding to 1. Nf3.