This is wrong assumption that if you have repeat customer or repeat purchase then your loyalty rate is high. Loyalty can be defined in other ways also.
If the customer is doing brand advocacy for your products/services, then it is also considered as a loyalty. In the digital age, this is one of the most important parameters to define loyalty. Recommendations are also one kind of loyalty. It impacts to increase market share, and Brand awareness.
Some brands like Patanjali, Maruti, Samsung, hp are having strong positive brand advocacy.
Brand Koncept help Large Corporates, MSME, and Startups to analyze customer loyalty and how to understand and increase it.