Simple:
* She followed the ancient ritual with precision.
* The morning ritual of making coffee was comforting.
* The team had a ritual of high-fiving after every victory.
More complex:
* The tribe's ritual of honoring their ancestors involved a week-long ceremony.
* Despite being modern, he still held onto the ritual of writing thank-you notes.
* Her daily meditation became a ritual, bringing her peace and focus.
Figurative:
* The city's rush hour commute was a daily ritual of gridlock and frustration.
* Their love for each other was a ritual of whispered secrets and stolen kisses.
The best way to write a sentence with "ritual" depends on the context and what you want to convey.