Any hope for connecting Ubuntu Server back to wifi if its not connecting from boot?

For context it's connected to my router through ethernet. Whenever I install linux on the computer and have ethernet plugged it, I'll have wifi without issue, (at least until times like now when I for some reason dont anymore), however I dont have nmcli (recommended here) downloaded and obviously cant download it. It's no issue to just reinstall, but I'm wondering if I can get it reconnected without doing that.