Do you use a particular site for gif-making? How did you make swampirella do that sexy little dance?
Is it magic?
My gif was too large to begin with so I went to an online site and resized.
For the Swamperella one it was a single image, not a video, so I had to copy the image multiple times so it ran as a sequence, I then used an effect, which I played with, from an online site.
Just do an image search with gif as part of it for say a film or actor you like, there are probably several available as gifs are popular, then save it as you would save an image to your computer. You can't edit it in say Paint, but it's not a problem.
Hopefully it is under 1 MB, and is under the required dimensions, but that's unlikely.
So go to an online site (safe one), upload the gif image, then resize. change the longest dimension to 150 pixels, the other should automatically resize. Changing the picture size will lower the final image upload size
too. You could crop to to do this too if that is available. You may find an optimize option, this reduces the file size with the loss of some quality. You could use these in combination.Download final gif.
Upload gif to profile just as you would a photo.
You could link to a usable online gif, but if the gif is taken down or moves then you will lose it from your profile.
Edited to try to make clearer.