Been getting caught in basic arm triangles recently and it sucks. Really frustrating for me as I just freeze and by that point they've closed the angle and it's in deep. It's usually from mount (which I know, sucks I have ended up there in the first place) where I become distracted by strikes and then all of a sudden bam, arm triangle. What's the first port of call if you feel the arm triangle attempt? I've looked at a couple videos online but they don't look too convincing, and I know there are a lot of knowledgeable bjj guys in here. Thanks.