You never want to straight up buy Youtube views. You can buy a placement for your Youtube video on a particular Facebook Group, Blog, etc, but you never want to straight up buy views.
Any views which are straight up purchases won't be engaged people, your simply getting bot views or views from people in third world countries.
In addition to doing absolutley nothing positive for your business it could actually hurt your Youtube video's performance on Youtube and in search because your getting very short watch time, your getting non USA visitors and they can pick up on the fact that your getting bot views and will actually remove views, likes, etc from your videos.
I've bought Youtube views, don't do it it's absolute garbage.