Here's why:
* Suffixes are added to the end of a word to change its meaning or grammatical function. For example, "-ing" (walking), "-er" (worker), "-ly" (quickly).
* "Wanted" is a past participle of the verb "want". It can be used as an adjective or part of a verb phrase.
Example:
* "I wanted a new car" (verb phrase)
* "The wanted poster showed a picture of the criminal." (adjective)
Therefore, "Wanted" is not a suffix, but rather a verb form or an adjective.