Construct 2 or 3 are pretty easy to learn, since it's visual scripting. They both have a free version and they make exclusively 2D games
i was going to recommend that to you, both i dont think you can code a big game with the free versions. so better try ur best
(construct 2 is better in free version because is less limited than construct 3 so ya :v)
edit: oh wait i forgot you are the host sorry xd