kohlrak: Either way, i don't think it's a bit over the top. By contrast, the OP seems to have a bit of an over-the-top response: they're trying to get banned? That means they're trying to come to a complete halt in buying. Clearly the problem is psychological,
Context here is that OP's been buying games from GOG. Only game with microtransactions to my knowledge is Gwent. So while I can see the psychological similarities between impulse purchase rush and lootbox rushes, they're still a bit different. I suspect OP's shitposting about wanting to be banned is a tongue-in-cheek bait to get people interested in the topic for their inputs.
Instead, it'd be more helpful to help set the OP up for the self-analysis [...] Better to pick this one at the root, because that will come out somewhere until the original source of the problem is at least identified.
Honestly, addictions are only problematic if they're compromising an important facet of their lives in compensation. If this is a real addiction, the best way is to seek professional help (i.e., CBT and possibly medication), improving mindfulness like meditation, and actively recognizing their impulses, and rerouting to another healthier activity instead (e.g., calisthenics, snack on some veggies/nuts, reading books, solving puzzles, etc.). Not asking other addicts about how to curb their game spending habits.
Given the severity of the OP's issue, which isn't a level of severe addiction, I think smaller solutions (e.g., introducing series of intermediate decisionmaking steps, sticking to a budget, boycotting, etc.) are appropriate enough. If these easy solutions don't work, then obviously they should be seeking a professional's opinion and not some randoms on the same platform they're trying to quit from.