Trainer Booking Website with Automation -- 2

I need a clean, mobile-friendly website whose primary job is to let clients book and pay for sessions with me. The booking flow must include:

• Real-time appointment scheduling that shows only my available slots
• Secure payment processing at the time of booking (credit card, Apple/Google Pay, etc.)
• Automated reminders by email or SMS to cut down on no-shows

Beyond the core booking engine, the site should also feature:

• A testimonials & reviews section that I can update easily
• A simple contact form that sends messages straight to my inbox

Feel free to suggest any other elements a professional trainer’s site normally includes (for example a dashboard for clients, package bundles, or integration with calendars like Google Calendar or Outlook) as long as the essentials above work flawlessly.

Deliverables will be:
1. Fully deployed website on my chosen domain, ready for clients to use
2. Admin access with clear instructions so I can update times, prices, testimonials, and reminders myself
3. A quick hand-off session (video or written guide) covering how to manage bookings and payments

If you’re comfortable building booking systems with tools such as WordPress + WooCommerce/Bookly, Squarespace Scheduling, or a custom React stack tied to Stripe, please outline your preferred approach and estimated timeline when you respond.