also heres the source: https://devforum.roblox.com/t/how-to-make-a-smoother-transition-between-two-animations/2687610/4
Developer Forum | Roblox
Well, I don’t think there is currently a built-in mechanism to select the way the animation fades out. However, for the smooth transition, you can also try to AdjustWeight both ways: smoothly adjust the old animation weight to 0, and the new one from 0 to the weight you like (where 1 is default). Let me know if this one worked out!