Learn slot rules: paylines or clusters, what wilds can and can't stand for, how...
https://www.third-bookmarks.win/learn-how-paylines-differ-from-clusters-which-symbols-wilds-can-replace-and-2
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.