I'm not the creator, but you could export it as a spritesheet instead and then change the animation speed as you see fit if you're using it in a game engine.
that's a good solution, but what I'm really looking for is more frames in the same rotation to get a more cinematic shot. changing the animation speed doesn't really change that as it'd make the animation choppier!
idk if u still need it, but i found a funny way to make it: watch the gif when u recording by some apps like OBS with lossless scaling, then u will get a video for example 144fps/s, then u made it XD