Hi,
There is no specific loophole for playing online roulette. It is best to play on live dealer tables, tables with a single zero, and French roulette, also known as European roulette, which offers better odds.
However, it is recommended to have a betting strategy when playing at a roulette table. Even the best strategies do not guarantee 100% success—it's impossible. The casino always has the edge.
However, some cheaters in England used their phones with special software to calculate betting zones based on the ball's speed and the green zero position—and their trick actually worked!
As for me, I use an online betting service that works quite well, but unfortunately, I can't share the link here... I’d probably get blacklisted!