Why isn't my death animation working?

[TreylllPlayzYT]

Update 1 on my game: Movement and First attack

Aye, it can be daunting but I think the testing’s worse than it actually is at times - what MagicBiscuit wrote above should give a good system, and from what they’ve told me before the health system plugin’s quite intensive on the system. Even though it’s a proper ballache, it might be worth lookin’ into a personally-made system, it’ll give you some oomph in the long run!

This was from a while back, according to him its system intensive.