The blinkies on my profile won't show up!

I'm a fairly new user on here and have messed around with the coding of some of the stuff on here... (not good at coding at all but whatevs). And I've been having trouble making images show up on my About Me page! I used to host my images on Discord (I know that it isn't the most reliable now) and have since switched up to imgur. I was wondering if this is anything just site specific, the site that the image is in or just an in-site thing? And if there's any fixes to it?
I always ensure that I put the code in right... It's <img src="insert image link"/> right?