can you actually beat the house at online casino table games with strategy

I've always heard folks claim there's a way to get an edge over the house on some of these online table games if you follow the right strategy, like card counting for blackjack or perfect roulette systems. The math side of me gets that the house has a built-in edge, but I also keep seeing all these YouTube vids and Reddit threads from people swearing by certain systems or progressive betting methods. Sometimes it almost sounds believable, especially if you combine strategy with those sign-up offers or free spin promos.

At the end of the day though, I’m wondering if anyone here has had any consistent success actually coming out ahead long-term? Or is it all just cold streaks and that one story about a big win?