A verb meaning to make easier is facilitate.
One meaning to make less complex is simplify.
To recover something, or to retrieve it.
"panacea"
Alternate. substitute (verb)
It means to replace something, with something else that is equivalent.
The likely word sought is substitute (something used in the place of something else, or an alternate player in sports).
The substitute teacher is horrible.I need to substitute something with the nuts in this recipe.The manager called the substitute onto the pitch.
The word substitute can be a verb and a noun. The verb form means to use something in place of something else. The noun form is a replacement for something which does a similar thing.
Something that is lost and then found is recovered.
The adjective is indivisible.
Synonyms include flawless or ideal.
easy ....... Questionable things are things that question you and make you think about something
Invisible