Because of your overwhelming popularity, you won without spending anything.
You even refused all forms of donations coming from others.
In other words, you had no election contribution and expenditure.
Does it follow then that you no longer need to file your Statement of Contributions and Expenditures (SOCE)?
The answer is NO.
Even if you had no election contribution or expenditure, or both, you still have to file your SOCE, which, of course, must reflect such fact.
Remember that what is only essential is you filed your Certificate of Candidacy (COC) within the given period.
This only means then that as long as you filed your COC, you have to file your SOCE.
[References: Section 14 of Republic Act No. 7166, COMELEC Resolution No. 10209 (Promulgated on September 27, 2017), Juanito C. Pilar vs. COMELEC, G.R. No. 115245, July 11, 1995, and comelec.gov.ph]