people claim sometimes about drophack but now the servers crash games disappear. even i won a game it was not in history

You can try to add steam folder to exceptions in Windows Defender. It helped me two months ago.

Go to Start > Settings > Update & Security > Windows Security > Virus & threat protection. Under Virus & threat protection settings, select Manage settings, and then under Exclusions, select Add or remove exclusions.

This has sadly always been the case for the switch version of the game. But i have noticed a drop in crashes since the "instant capture feature" was disabled from the switch version (still want it to come back tho)

Please submit a support ticket.