best blackjack game for learning without playing against crazy deck compositions?

I've been trying to brush up on basic strategy and card counting for blackjack, but every time I try to practice on free apps or sites, it feels like the deck is stacked with more 10s or way too many aces flying around. Sometimes you'll hit a string of five dealer blackjacks in eight hands, which makes me think these games don't really stick to realistic shoe compositions. Not sure how much that messes with my odds, but it's making it tough to track how solid my skills are getting.

I want to practice in a setting where the deck or shoe doesn't go crazy or shuffle every single hand. I know nothing replaces sitting at a real table, but for home practice, I'm hoping there's a sim or app that doesn't have weird algorithms or hidden bias. I just want to grind out hand after hand on a fair setup, not chasing ghosts. Has anyone found a practice tool that sticks close to actual casino rules and deck balance?