App is adding black background to GIF’S when overlaid on top of videos

When adding GIF’S to overlay on top of my videos, the app adds a black background to the GIF’S. When using the ‘remove background’ option, the feature does a terrible job at removing the background the app created.Adobe Premiere Rush never had this issue, it would seamlessly display the GIF over the videos without adding a background. I’ve tried multiple export settings in procreate, the app in which I make the GIF’S, but that doesn’t matter, because the same process I used in Premiere Rush should be consistent with Premiere Pro.