totally useless with rss

I am sure this has been asked before and I am sorry for having to ask it again. I can’t figure out what link I am suppose to give when I want to add my site to a sydication service.

After readng other threads I thought there was two possibilites.

One would be https://www.parkerthepug.com/blog/feed/ and the other would be https://www.parkerthepug.com/blog/?feed=rss2

The first one gives me a 404 page and the second gives me some sort of html. So, because I actually got something with the feed=rss2 like I thought that was what I needed. However, when I went to add it to My Yahoo as a test I got an error saying there wasn’t a feed there.

What is the link I should use? I hate being this clueless but sometimes you just have to ask.