Two stars in the Silver League?

Hello, I moved into the Silver league when I acquired first place in the bronze tournament earning my first star, but I noticed some players already had their first star in the Bronze league, and some players had two stars in this Silver league I’m in. I placed second in the Silver league, so I’ve earned my second star and I’m prompted to join the Gold league, but how do some players remain in one league and compete with star-less participants when they’ve already earned the star?

if you finish top 3 in a tournament you are promoted into the next league

 

if you finish bottom 6 in a tournament you are demoted into the previous league

 

when you are demoted you don’t lose the stars you have earned

 

example: I have 5 stars but I can still lower myself into bronze league if I wanted by consecutively losing tournaments