Main use is merging a bunch of video into one big ones.
Another use is clipping the videos. Cutting some part.
Simple ones are good.
Preferably open source free but that's not mandatory.
If paid, I prefer developers that have enough common sense to sell cheaper to Indonesian.
I tried openshot. They do not support simple merging. The resulting video is too big and choppy. I saw someone do it with avidemux and I will give it a try.
For simple videos merging I need something really simple. Something that can combine 2 videos in minutes. For something a bit more complex I need something that supports hardware encoding.