Not every tutor is the right fit, even when they know the subject. A few things are worth checking before you book.
Subject depth
Check that they hold a degree in your field and can explain why a method works, not just how to follow it.
Teaching style
Some tutors lecture, others ask questions. Think about which one helps you learn, and try a first session to see.
Clear expectations
Good tutors ask about your goals, your deadline and your grading rubric in the first conversation.
Practical details
Look at availability, rate, cancellation rules and whether sessions can be recorded for later review.
If a first session does not feel right, switch. A good match makes a big difference.