I suppose that is possible. But what just happened here?
The word in question (many) was part of a phrase (the many). You ignored the phrase "the many" in favor of the word "many". In doing so you unintentionally (I hope) claimed that "not all" were made sinners "through the disobedience of the one man". Oops.
But prior to that, you completely dropped verse eighteen, which clearly says "all". In both verses you have equal comparisons being made. There is no way around that.
Romans 5:18-19
Consequently, just as one trespass resulted in condemnation for all people,
so also one righteous act resulted in justification and life for all people.
19 For just as through the disobedience of the one man the many were made sinners,
so also through the obedience of the one man the many will be made righteous.