This is the Miesis Opening. It is considered passive, but white generally transposes into a King's Indian Attack. You can see the names of white's first move at gameknot.com

While this is fine, 1...e5 and 1...d5 are slightly better.

This is an inaccuracy: it is passive and blocks in the bishops on c1 and f1.

2...e5 would be slightly better to take advantage of white's passive opening.

This is a mistake because it brings the queen out too early.

3...e5 is another good move because it controls the center while attacking the queen.

Yes this is a poor move. Although white will also move the same piece again, your knight ends up on a poor square.

Another tempo loss after 6...Bd7.

This move is safe, but it is a bad move. Much better would be to block the check, preferably with 6...Bd7. Don't move your king when you can block the check unless you must do so to save material.

This gives away a pawn, because it is not defended. 7...Bd7 would be a better move.

This drops your c6-pawn. Consider all checks, captures, and threats available to opponent after your candidate move to make sure it doesn't lose material.

If 10...Nb6 is fine - if 11.Bxb6 then 11...Qxb6