Teamwork missions.

I find these missions really frustrating and not enjoyable. Instead of having fun im wasting hours on the client searching for a group of 5 (my friend list is full and its still hard to get a full group) And when I do get a group and I fail the mission Im getting more frustrated because I know Ill have to try to get a 5 group again. Passing on the mission also doesnt feel good because I want to complete all of the missions, Id rather not having this mission at all instead of knowing I didnt complete it. Please think about it Riot.