Privacy vs Convenience: How do mobile booking apps protect user data?

In today's digital world, mobile booking apps have become an integral part of our lives, offering convenience and speed in planning trips, attending events or ordering services. However, along with these advantages, the question arises: how securely are our personal data processed and stored by these applications? It just so happened that I have the same product. And I am very interested in your opinion: "I want to cut my hair!" Make a phone call or create a visit through the app? Here's a question... What are your thoughts?