Learn slot rules: paylines or clusters, what wilds can and can't stand for, how...
https://judahsexcellentthoughtss.yousher.com/i-see-the-word-scatter-but-it-doesn-t-trigger-free-spins-why
Learn slot rules: paylines or clusters, what wilds can and can't stand for, how scatters start bonuses, and why meters do not mean a win is due. Each game has its own terms. Read the paytable first, then play with clear expectations, not guesses.