You do not own the delivery
Even your followers get a sample, not a guarantee. If your recent videos were off topic, the app gets cautious about showing the next one to the people who used to care. Posting five times in an hour does not fix that. It can make it worse.
Give people another door: a series they can open on purpose, a live schedule, a newsletter, a Discord. Those are the places a follow still means something when the feed is moody.