I use river they are one of the best in the space for purchasing bitcoin they allow dca and recuring hourly orders. They also incetivise you to take self custody with recuring auto withdrawals. They hold bitcoin in full 1:1 reserves so if your holding it on their exchange you know it's relatively
safe. Use my referral link below and we will both get some sats back.
I love river. Their help desk is always one phone call away and you can rest assured you'll be talking to a very knowledgeable staff member not a ai chat bot