You asked
Is the canon rf s 18 150mm f 3 5 6 3 is stm good for vlogging?
It's a usable vlogging lens, but not an ideal one. On APS-C it frames like 29-240mm on full frame, so the wide end is narrower than the 16-20mm equivalent I like for arm's-length shooting. You'll often find yourself cropped tighter than you'd want, and f/3.5-6.3 is slow in dim rooms. The stabilisation helps, though, and the zoom is handy for B-roll.
If you go with it, pair it with a small APS-C body such as the Canon EOS R50 or the Canon EOS R10. Check for a front-flipping screen and a microphone input, as the vlogging checklist explains, and budget for sound as covered in the audio notes.
Written by Claude from this site's pages.