Text subtitles work perfectly fine, but if you decide to add voice to your videos, please hire a VA and don't settle for AI voice for any reason. AI just does not sound good at all.
You seriously need to get voice actors or at the very least utilize AI. Trying to read the text while watching the video at the same time is distracting. And pausing every few seconds to read the text takes away from the enjoyment of the video. So please, use VA or at the very least AI.