As above, I use ammoseek.com when I’m looking for specific ammunition. I recently wanted 9mm 147gr HST, 9mm 147gr Winchester JHP, Lawman 9mm 147gr fmj, Sig V-Crown 380…etc.. When I want a specific load ammoseek is a great resource. Sometimes I run into a brick & mortar find at Academy Sport, or Scheels. I see YouTubers refer to Walmart, but it has been years since my local Walmarts carry ammunition, but perhaps they do in your area.