Scheduling Appointment Plugin

Hi,

I’m pretty thrown away from so many different scheduling plugins…

Does anyone have an experience with an affordable plugin that:

1. Support scheduling sessions/appointments that has with different durations
   (15 min, 30 mins, 1 hour)
2. Take care of the payment
3. Has calendar integration, other than Gmail
   (preferably Proton, or maybe just its own dedicated calendar)

I would appreciated any knowledgeable recommendation ????