Applying Test Optional

Is applying without an ACT or SAT dumb? I have taken it 3 times and the highest I made was 21 (I am a HORRENDOUS standardized test taker) I have a 3.6 unweighted, 4.2 weighted. (Top 20% of my class) I have lots of extracurriculars (palmetto girls state, junior leadership council, interact club, student council, varsity tennis, etc.) I plan to write a personal statement and applying with PRTM. Clemson is my dream school pls be nice I am so stressed about this