Premier and Corel are hard to master and addictive. That is why as the best professional alternative I have emphasized Pinnacle Studio. Camtasia also refers to amateur programs.
In my opinion, if you do this professionally, then you need to master the program from category of professional. Since progress does not stand still, and no one guarantees that the amateur little-known program will not stop its updates / development tomorrow, and as a result you will have to switch to other software and again study. As a result, you will lose a lot of precious time.