Mistakes 1. 14. Nb5. In this phase, there is a threat fxe4 with fork losing a piece. I am offering to sac a knight and then mate in 3 (Qa3+, Qa7+, Qa3#). I didnt calculate what happens if my opponent will not take the byte, which obviously happend. 2. After that, I had another miss calculation hoping cxd6 followed by Qb6 (which happened), but I missed Nc8 to disolve the attack.
Points to take 1. Try to evaluate objectively as possible and dont rely on opponent to make mistakes. 2. Improve my calculations