Nice lifts, no major problems, IMO. On the first snatch video the bar tracks around the knees slightly, but you manage to get it back to you prior to the 2nd pull.
As effortless as 50kg looked, and your pull at 60kg, there is no reason you shouldn't be lifting in the 70kg range. Maybe post a video at 60+kg? Any real problems will standout when you approach your max.