You can use custom CSS in your profile settings. Go to your profile, click on "Edit Profile," and in the "About Me" section, add the following CSS code:
#profile {
position: relative;
}
#gif {
position: absolute;
bottom: 10px;
right: 10px;
width: 100px; /* adjust size */
}
#gif img {
width: 100%;
}
Then, upload your GIF somewhere like an image hosting site (e.g., Imgur), and add the link to the "About Me" section with this HTML code:
<div id="gif"><img src="YOUR_GIF_URL_HERE" alt="Your GIF"></div>
Make sure to replace "YOUR_GIF_URL_HERE" with the actual URL of your GIF. This will position the GIF in the bottom corner of your profile.