a few new channels with the same niche as my channel are blowing up why?

So Just like the title says. lately I see channels with the same niche as I, are blowing up even though they started doing it after me ?? its really discouraging. and no its not the content quality , Mine's are way better . and I did everything possible in the SEO and even my thumbnails are so much better.

They are getting like 200k views average in every videos they upload and meanwhile I struggle to get 1k…..