I did that first enabled 34197 UDP port forwarding. If you read carefully my comment, that's how I started it.
After that thing didn't help. I also enabled 61621 also as someone recommended in the comments. Still didn't work. Then I enabled UPnP and used that chrome app ...
I just installed the game on my other computer at my moms house. From steam. Normal version (not beta or anything). No mods. Her computer is a bit less powerful than mine. And the game keeps crashing during play. 2nd time crashed in last 2 hours. Here are some logs.