What hardware and software are you using to record your videos?
I record with a Sony A7 III (and sometimes the A7 C) paired with a light bar. I use an XP‑Pen tablet for drawing, a Samson Q2U microphone, and the Auphonic service to clean up the audio. For on‑screen annotations I use Presentify on macOS. The camera is high‑end but not required; you can get decent results with cheaper gear.