There's a decline in population and Mass / Liturgy attendance across the entire country. My Byzantine parish is usually full every Sunday, but I'd say 20% of the population is revolving door visitors who stay anywhere from a few weeks to a few months, then move on. The local TLM parish is in the same boat. I read their bulletin every week and they publish attendance numbers, but they've stagnated since covid.
The thing with the more ancient liturgies is that they're shiny and new for a lot of people at first, and they dive into the traditionals and liturgical calendar with a lot of zeal, but eventually the lustre wears off, the enthusiasm wanes, they get bored and go back to their normal, jurisdictional novus ordo parish. Because they realize as long as they have to go to a boring liturgy every Sunday, it's easier to go to the one that's 5 minutes away and lasts 45 minutes, rather than drive an hour to the ones that last twice as long.
The overall trajectory of the Church in the West just doesn't look very promising, whether it's novus ordo TLM, or Byzantine. The fact is that the older populations who not only go to church but provide the majority of donations and funding are dying off, and the younger generations not only aren't going, but they either don't donate or don't have enough to donate. It's just the reality of the situation.