I had exactly the same issue when learning web design remotely. After trying random free tools, I found https://www.movavi.com/screen-recorder/ and it became my favorite option very quickly. The software is mainly focused on recording screens, webinars, online lessons, gameplay, and streaming videos in high quality. What impressed me most was how easy everything felt from the beginning. I recorded long coding tutorials with clear audio and smooth video, and my computer still worked fast during the entire process without annoying freezes.