We know that everyone has their own style of video creation because we’ve already seen your different audio & visual setups. But for this discussion, we’d love to know which software you are using to pull it all together?
Which editing software do you use and why do you use it?
Adobe Premiere Pro. It is a little difficult as it has a lot more features but once you get the hang of it, it's pretty easy. Recommend taking a Premiere Pro course on Udemy, I took Phil's.
For images, use Adobe express, comes with the Adobe subscription, or Canva.
Camtasia, and then upload it to Auphonic to ensure that the audio is at a consistent level.
If you have problems with sound levels between videos, please look at Auphonic, which just solves those problems for me.
Camtasia for screen recording, quicktime for webcam recording. Latest version of Camtasia is not good at all for capturing webcams to be honest. However you can use it with quick time and everything will work fine.