Tonya was leaving The Dime in L.A. on Monday night -- just days after fighting Cyborg at UFC 214 on Saturday -- and seemed to be in pretty good spirits after her 3rd round K.O.

Evinger told us she's not guaranteed a rematch -- even though she fought Cyborg tougher than any other fighter before her -- but says she'd REALLY like another bite of the apple.

And why? Tonya says she knows what she can do better the 2nd time around.