Review how to restore or replace swatch libraries in Illustrator. As of 2023 the remaining Pantone Color Books were removed from all Craetive Cloud applications. Pantone color swatches have been a built-in asset to these programs and the lack of them has made it difficult for many to adjust. See what options are available to you.
https://www.directcolorsystems.com/wp-content/uploads/2024/09/TechTips_Sept2024.pdf
