As it stands, I’m not gonna try wasting too much time with this; You’re a survival player, and you’ve been around long enough that I doubt you’d consciously advertise and get banned for it.
You’ve identified likely why you got banned, on phase. Anything that happens to consist of 3 or more periods in an orderly fashion of an IP(ie 1.1.1.1) will lead to an auto ban, for advertising. Like you stated, try to make conscious efforts towards avoiding this, because ultimately, if it happens again it becomes more of a pain to appeal, as you are expected to not make the same mistake again.
Both you and I know why you were banned, and you basically acknowledged that reason, but it is still required that you read the rules from here, and copy and paste the exact one you broke before I can continue this appeal process.