You must have some patience. It takes time to fill tournaments. And December is hardly the time when most people sign up for new tournaments.
Many players also have different preferences regarding tournaments. Most people prefer the time control of 3 days (it is neither too slow nor too fast).
I couldn't dream of signing up for a 'no vacation' tournament, as I prefer not to have to play chess during my holidays. Others have it just the opposite.
And then there is the rating range. Many probably wait to register for a completely open tournament until they have seen who else is participating. It's not much fun with too big differences in strength.
Someone has tournaments with ~100-200 people. How can I reach to a lot of people join my daily tournament? I made three tournaments with 12 people to join, and I made the tournaments in 2023 december, and the tournaments has started in february. What? Now I have started a tournament with 80 people to join.