YouTube let's plays where you can actually see a game being played are my preferred 'review'. There are some entertaining content creators who make informative reviews, too, but you need to see a game being played to really judge it.
^^^
This
I follow a few Lets Players that have similar tastes to mine, and generally look at them, or other Let’s Plays, before buying. It’s not perfect, one of my favorite Let’s Players had a meltdown due to being “wrong genre savvy,” but I’ve bought, or avoided, far more games due to watching a Let’s Play, than any reviews.