Good tips but I wanna add few points to make it clear. First of all, having concrete bankroll may save the gambler who thinks to try luck on slots but 7-10 spins per slot don't make sense in the long run, IMO. Minimum 100 spins per slot and running away if it doesn't bonus in predetermined spin count sounds better for me personally. Regarding RTP, checking real rtp is not going to help gambler, it only counts for millions of spins that can't be done by single player.
Losing in a game is commonplace, especially if the game we play is purely based on luck. Speaking of slot games, it seems that everyone is well aware that the probability of winning that we have is smaller than the ratio of losses that we will receive. So, it's only natural that we tend to lose in slot games. even so, to be fair at least slot games offer varied rewards. well, that's unique, even someone who is lucky can get the jackpot from the game session. In fact, the prizes offered can be many times the number of spins we bet.
And yes, i agree with what you said. that by checking the RTP, in fact it doesn't really help us gamblers and the only factor that helps the most is luck. One more thing, trying your luck in slot games based on only 7-10 is very ineffective. Except, luck is on our side. so, at least we have to try at least 50-100 per spin. if it doesn't show good changes or rounds, then we look for another game.
But by the way, we should at least appreciate the tip the OP shared in this thread. at least, the OP has made an effort to share his experience.