og usernames

Hi. I was wondering how I could get an OG username. The account hasn't posted since 2010 so I don't think its active anymore. It's not a super common name. If you have any ideas on how to go about this please let me know. Thank you guys,

I'm looking to get an OG username that's taken, but completely inactive. Is there any place on this forum that can address this problem or can anyone help me out?

Can anyone tell me about OG Instagram username or short name, tell in brief also share some example.

Is there a market for this type of thing? Can money be made for selling unique names? What sites are more worthy, IG, YouTube, Tumblr etc?