In my opinion, both sports betting and slots are equally addictive. In slots, you are looking for a strategy on how to hit the jackpot by manipulating the bet or going through the slots, and in sports events, it is a search for insider information about the match you want to bet on, plus dealing with team scales, player injuries, and so on. In both cases, you need to have a sober head so as not to turn the game into an addiction.
Gambling addiction has nothing to with the specific games you put your money on. Gambling has this spirit of making you feel you can double your money, it will tell you to risk Y amount to make an X amount but then you aren't sure how possible it is. If you do it with sense, you might make it and you might not make anything but if you make nothing out of it and you were able to stomach it, then you have nothing to worry in the future but if you want to forcefully recover the money that you lost, you might end up addicted faster than you think.
Whether it's sport bets, casino games or crypto games, online or physical games, if you do them too much, you will feel the effect very well. In fact, if there is anything you do in this life and you go extreme about it, you will reach a point of marginal satisfaction where the positive side will turn to a bad side.
Consistently gambling with no limitation or control definitely will lead a player to addiction. Regardless of the time interval. Don't you think that those who gamble once or twice a week also get addicted to gambling? One session or two is certainly enough to make a negative impact on a player. Addictive reactions on gamblers show up unexpectedly and the player would flow if he has no strong self control. I think gambling everyday is not the only road to addiction.
Although, It seems as one with most gamblers who are addicted. Because they can't go a day without gambling. But, lots of daily gamblers are not addicted. They can stop at the right time and abide by their strategies and personal guidelines on gambling. Personally, addiction is a part of gambling. Just as nobody can predict the right game consistently, same way figuring out how addiction completely operates is unpredictable. Anybody can get addicted even the once a week type of gambler.