title: (Unity) Why my 2d animation doesn't look smooth?
body: <p>my 2d animation looks stop a little moment when loop finished and start new loop.
  I copied my first animation keys and pasted it to my last animation key time.
  And i don't know what it is, but it said i'm using Euler Angles.</p>
  <p>What can I do?</p>
  <p>link below will show my animation video</p>
  <p><a href="https://drive.google.com/file/d/1-bw8kVD2gkcdq7-gBge3duwctDVXFp94/view?usp=sharing" rel="nofollow noreferrer">https://drive.google.com/file/d/1-bw8kVD2gkcdq7-gBge3duwctDVXFp94/view?usp=sharing</a></p>
  <p>(as you can see, i'm beginner and even not an english user...anyway, I'll wait for ur advices)</p>