Ok, especially since I was invited. My size soft is about like yours, and it has been a problem somtimes with sports. Impact sports are the worst, where you need to wear a cup. I was never able to use those, which is one reason I have never been into contact sports.
I don't like jocks either as I have to sort of double my cock over, and then it protrudes a lot and kind of "bounces" more. What I use are the sports briefs. They allow me to position it off to one side and keep it firmly in place. Soft my cock doesn't bend around my thigh, but perhaps I am not as thin as you are. Certainly, it is not comfortable to have it bending around.
Sometimes I wear snug fitting boxer briefs or spandex shorts underneath. For me it works better to have my cock positioned to the side minimizes it getting in the way, but there is no "perfect" position I have found for sports. Down, and it gets between the legs (no good), up it is uncomfortable to bend at the waist, and I don't like it all "balled" up in a jock, so to the side is the best option for me.
I hope this is helpful.
Jack