Every week or even everyday is fine as long as you stay on your own limit on each play. It is better than you play once a month or even once a year but you play over your own limit.
Really I just gauge it by the bet amounts relative to income, nobody else can really say how much exactly. Alot of people are playing just for fun especially on the card games, its not a big money gamble to them or the same mindset as someone spinning the roulette wheel for that purpose alone
Because its a personal judgement, this is where it gets risky. Every day could be fine or even once a month too much for some people who cant handle risk in a gradual way. A bit like some drinkers I know, in theory they drink too much but also they are used to it over many years and know their boundaries and have a routine. I used to gamble far more regularly because of sports betting but havent done so as much recently, I find thats perfectly fine as its just not my interest so much now. Its more worrying when people carry on gambling despite not really enjoying it, I prefer not to take the money side too seriously and think thats the best approach personally