Precisely. It's an event, an action; nothing more. As reiterated, adding anything to that is from a subjective perspective, not objective.
You cannot claim something isn't evil if you can't define evil. What you have personally done is defined evil as subjective nullifying the argument on you/your beliefs, assuming the other premises also applied to you.
However, a religion that defines good and evil, in order to label God as all good, has a definition. Even if the definition was conjured by subjective thought on behalf of the religion's followers and creators. Nearly all definitions of evil, to people who follow such beliefs, would say it is evil to murder, etc. This is why I received many posts adding free will to cover that basis. Applying murder to something without free will, like nature, shows that the same definition of evil exists beyond humans and their choices.
Main Entry: 1evil
Pronunciation: \ˈē-vəl, British often & US also ˈē-(ˌ)vil\
Function: adjective
Inflected Form(s): evil·er or evil·ler; evil·est or evil·lest
Etymology: Middle English, from Old English yfel; akin to Old High German ubil evil
Date: before 12th century
1 a: morally reprehensible : sinful, wicked <an evil impulse> b: arising from actual or imputed bad character or conduct <a person of evil reputation>
2 a (archaic) : inferior b: causing discomfort or repulsion : offensive <an evil odor> c: disagreeable <woke late and in an evil temper>
3 a: causing harm : pernicious <the evil institution of slavery> b: marked by misfortune : unlucky
— evil adverb archaic
— evil·ly \-(l)ē\ adverb
— evil·ness \-nəs\ noun
1: Does not apply to events.
2: Not related to the discussion.
3: Synonymous with pernicious, which can either mean (a) harmful, or b(wicked), an archaic definition.
The first meaning of the third definition is all you are going on, where evil simply means harmful. This is quite different from the first definition, which is the one Abrahamic religions go on (they are also the only ones that posit a "omni-4" God).
Other (apparent) flaws in your argument:
#1
You seem to deviate from the classical argument of the problem of evil. You may (I am not saying you are) suggest that because:
1. God-type X has to be every where (omnipresent).
2. God-type X has to be entirely good (entirely not-evil).
3. There are evil things.
God-type X cannot logically exist.
The flaw here is your confusing everywhere with everything. This is not omnipresence, but omnibeing, God being everything. All Abrahamic religions hold that God created all material things, so these material things are not God/the same substance as God.
#2
The false analogy of the babysitter
The baby tries to drink drain cleaner, not knowing any better. Human beings posses conscience, and have a sense of right and wrong.
#3
The classical argument is worthless too
Is God Willing to prevent evil, but not able?
Then he is not omnipotent.
Is He able, but not willing?
Then he is malevolent.
Is he both able, and wiling?
Then whence cometh evil?
Is he neither able nor willing?
Then why call him God.
The third line reaches a premature conclusion and the fifth has already been answered.