Online Slot are games of chance where winnings are paid out based on a random number generator (RNG). This means that there are no hot or cold slots, and that results can never be predicted. However, there are certain things you can look out for when choosing an online slot game to play. One of these is the payout percentage, which will tell you how much money on average a slot pays out to players. Another is the volatility, which indicates how often a slot pays out small wins and how frequently it will pay out large wins.
You should also check whether a casino has mobile-compatible slot games. These are typically built from the ground up with touchscreens in mind, and they usually offer better compatibility with smaller screens than desktop versions of the same game. For example, NetEnt have revamped many of their slots into the NetEnt Touch series to make them more mobile-friendly.
Finally, you should check if an online slot site accepts your preferred payment methods. This includes credit/debit cards, e-wallets (e.g. PayPal, Skrill), bank transfers and cryptocurrencies. Most online slots sites accept a wide range of these, so you should be able to find an option that suits you.
While RTP will decide your winning chances in the long run, other factors such as volatility or variance will have a bigger impact on your overall odds of winning on each spin. A low variance slot will pay out small wins fairly regularly, whereas a high volatility game may not give you any winnings for a while but when it does, the wins are big.