Do I Have A Chance Of Admission After Poor Frosh and Soph Grades and Upward Trend In Rigor?

In a word… NO. Sorry to be blunt but you just aren’t getting it. Less than 6% of students have an UW gpa of 3.24 or less, let alone a weighted one even lower than that. Unless you are a recruited athlete, or a Nobel Prize winner, you need to move on and find schools for students with your profile.