In the end there may be little you can do, but I'll try to post a complete set of options.
And thank you for wanting to help.
You can post a comment (under the question) to suggest another Stack Exchange site, e.g.
"This question would be on-topic at Interpersonal Skills (or Parenting), if you'd like to ask it there."
Then, if they choose to post their question there, answer it there (according to the conventions of that site).
Learn a bit, enough, about Buddhism: so that you can begin to answer questions on this site.
Be a counsellor (perhaps a professional or friend): so people bring questions to you in person.
Maybe do nothing (except silently offer best wishes and hope that other people will help, and/or that the OP will find a way of their own): because you can do nothing -- the topic in question was tagged equanimity after all
No comment, on whether your advice and the reddit site you suggested would have helped the OP.
In the past I have been required to edit one of my answers, to clarify its connection to Buddhism: in a comment under Should content the from a Buddhist POV or Perspective or presented in relation to Buddhism, one of the (other) moderators wrote, "a buddhist approach should be added".
Now so far as I know, that (i.e. "answers must be related to Buddhism") is a policy of this site; and I try to apply the site policies even-handedly no matter whose answer it is or what question.
If you had posted an answer saying, "Well Christianity teaches X...", then would have been off-topic; and similarly an answer saying, "reddit teaches Y...", was also off-topic in my opinion.
Any question on this site is implicitly trying to ask about Buddhism. Any answer should at least, I don't know, try to be informed by Buddhist values, even when it isn't quoting Buddhist doctrine. If what you said is true, that "I know NOTHING about Buddhism", then this isn't (yet) an ideal site for you to post answers? And in this question the OP ended, explicitly:
I would just like to try to evaluate and get feedback on my situation from a spiritual/Buddhist point of view.
People take "refuge" in Buddhism. By posting on Buddhism.SE the OP is asking for a Buddhist POV.
Part of the purpose of Stack Exchange is to make sites which are moderated and so on (by the community)