it depends on how you want your deck to be reviewed. there are loads of youtube channels that do walkthroughs of decks without much in depth commentary or supportive criticism/ feedback, i stopped watching them because i find them boring and uninspiring. One of the reasons i stopped watching hermit’s cave for example is because he adores every deck he buys and never actually seems to work with them, or discusses individual cards or card meanings or gives background on the creators. same goes for boho tarot and other popular tarot channels. but they have loads of followers so if you simply want to generate some attention for your deck you should probably send them a free copy. tarotoracle is a very active and upcoming tarotuber, his reviews are not very in depth but he does lots of readings and posts lessons, using different decks, so you might want to check him out, he seems indefatigable.... jennifer ball specializes in indie/ kickstarter decks, she was the only one not related to CoT who did a review of our button soup tarot. but she, too, does not do much more than show the cards and talk about the cardstock.
when you want serious and in depth reviews you’re better off with the already recommended channels of tom benjamin, truth in story and tarot map, they are awesome.
some other channels worth mentioning here are
oya’s girl
abundant life tarot
shamanic arawak priestess
sparkle divine tarot
these are channels that not only do more than superficial deck reviews, they also comment on how decks represent people from different cultures, which is something i would really want to be reviewed in my deck
i would also consider which regional area reviewers cater to. jules from esoteric cosmos & books is australian, lisa from supportive tarot is canadian, both do very extensive and valuable deck reviews. lisa has a series called tarot by the book, where she does readings consulting the guidebook. jules is an astrologer and has a ton of esoteric knowledge, her reviews are really well crafted and very informative. oh i almost forgot australian based katey flowers, great content. And Dan, at modern metaphysicae.... aw i could go on and on.... better stop now
finally, for europe i would contact beth at her little red tarot website and shop, she is the main distributor of indie decks in europe, and she does lots of reviews on her blog, also by guest writers.
somebody mentioned Anneke at nobody here 2020 . she has a wonderful youtube channel that i really like, but she mainly reviews historical/ specially printed/ unique editions of decks, and not very often, so i wouldn’t recommend sending her any review copies.