Though for someone having a bigger salary, I believe percentage based gambling can easily work here depending on ones risk appetite and dyou really need to be disciplined to follow it otherwise once in a while you are likely to go overboard!!
This is completely logical if we want to deduce a general rule, and the only general rule that applies to all cases is “Do not gamble with any amount that you are afraid of losing,” regardless of its size. I believe that this applies not only to gambling, but to any other recreational activity (if the gambler is an amateur) or any investment activity as well (with the difference that it is possible to risk applying for a loan for the purpose of investment).
What I concluded from Op’s thesis is that he is hesitant about the percentage that he will allocate monthly to gambling, considering that he is an employee who receives a salary every month, and he did not take into account other cases, such as those who work in freelance or business owners, who undoubtedly represent the largest percentage of gamblers who are able to spend large amounts. My advice to him is to diversify his sources of income so that he can allocate an independent budget for gambling activities away from his monthly salary.