No targets matched selector after player died, even though testfor works

[severe timber]

so?

u should wait until player spawn

[soft plover]

it depends on which @ you were using @p @a @e work differently

@e does not detect dead, and neither does @p for that matter... @a does, so the equivalent of @p is @a[c=1]

Like this is a common death check routine..... notice the behavior of the @

tag @e [type= player] add alive
tag @a [tag= !alive] add dead```