It doesn’t look like you are playing a montage it looks like you are just Playing an Animation. There is a difference which is with montage you can smoothly blend in and out from them.
I think you can work with animation BPs and Montages very well, i’ve done so several times before, for example in this Swing Mechanic i did:
https://www.alexanderfloden.com/other-1
Here is Epics own intro to montages, its quite old but its probably fine:
