As a single-member LLC without an election to be treated as a corporation (S or C), the LLC is a disregarded entity and, as that single member, you cannot pay yourself a salary (or otherwise put yourself on the payroll).
It is generally too late to make the election at this point for last year, but there is relief for late elections (see the link below).
https://www.irs.gov/instructions/i2553#idm139855003794080