Rent the feed, own the list
Follows are rented. An email list, a newsletter, or a Discord you run is closer to yours. You still have to be worth opening. A list you email only when you want money will die.
Offer a reason to join: a schedule, a bonus, a recap, a template. Put the link where the video already earned trust, not in the first second. SMS is optional and easy to annoy people with. Use it rarely, if at all.