I want to have custom sorting options for products review on product page in magento 2(without using any of the extensions). Currently i have managed to get the toolbar above the product reviews i just don't know how to get it sorted by recently submitted reviews, oldest reviews and newest reviews. Is there any way to accomplish this. Please help.
You might want to consider the functionality that our Product Reviews and Rating extension offers: https://www.mageworx.com/magento2-product-reviews-and-ratings.html
Feel free to contact us at email@example.com if you've got any questions.
Good luck in finding exactly what you are looking for!