Have those of you who are looking for diet rootbeer tried those little "A&W Singles to Go" packets? You just mix them with soda water.
https://www.amazon.com/Root-Beer-Delicious-flavored-beverages/dp/B083WP5WY5
https://www.amazon.com/Root-Beer-Delicious-flavored-beverages/dp/B083WP5WY5