It took me years to realise that adobe premiere is the best editing software (in my opinion). I tried using vegas pro but it lagged so much everytime i tried to edit a video. I also used coupe of free programs but they also started lagging after i put a coupe of videos in the project and it slowed my workflow for like 300%. When i finally switched to adobe premiere i realised that this was it, that this is the software that I’m gonna stick to. It never lags, it’s not out of sync, you can put as many videos as you want to in the project without freezing, it’s easy to use and it’s what the pros use so i’d definitely recommend adobe premiere.