YouTube is a marathon and a slow grind, so gaining subscribers for many is not fast. What you really want are subscribers that watch your videos, the interaction helps a lot.
Also, don't focus on the numbers, that is a deep, deep black hole that is hard to get away from. Make your focus on having fun and doing what you enjoy, your tribe will slowly find you.
Interacting with the Sims community on Twitter can help. Don't just drop a new video link and run but try and interact with others and see what happens from there.
As for the video you shared:
-Personally I found the music to be off-putting and this could just be my taste versus someone else's. The reason I didn't like it is the base, I have a really hard time with deep base in music since it can cause me headaches. Again, this is probably more just me than the wider populace.
-I did rather like the almost stop motion aspect of the clothes just appearing instead of watching you endlessly scroll through the options.
-As a viewer, I do definitely prefer to know why you made your choices. You could always try adding text/subtitles to help explain if you're uncomfortable with a voice-over.
-Now is the time to really play around with different ways of doing your videos and finding what works for you and what doesn't. Some videos may be a fail in your eyes but really they are a stepping stone in your journey.
-I'm not an expert whatsoever but I thought your editing was good.
Just remember to loosen up and have fun. Each video is a learning and growing experience. :smile:
Edit:
Forgot to drop this link in for you for some free royalty music to browse through.
https://freemusicarchive.org/