4 FUN is a Youtube channel owned by The Soul Entertainment, who also owns BRIGHT SIDE, 5-Minute Crafts, DOODLAND, etc. The channel was made around mid 2019 and then got deleted possibly in early 2021. Their videos are quite known for their slime making videos, by using either piping bags or balloons. The piping bags and balloons in their videos have the faces and limbs similar to DOODLAND's ones.
Their icon was probably a yellow female glove balloon scared, which is possibly on a white background.
Also, you guys can help me find their videos :)