Stalled accounts are almost never a photography problem. They are a titles problem, a pricing problem, or a "posting once a fortnight" problem.
Work down this list in order and stop when something moves.
1. Titles
Rewrite every title to include what it is, how many, and the price. "Soles" becomes "3 sole photos, $6". Boring titles sell; atmospheric ones do not.
2. Price
Drop the lowest item by 30% and keep it there for two weeks. One cheap entry product converts browsers into buyers, and buyers then trade up.
3. Timing
Post at a fixed time for fourteen days. Pick a time you can actually keep, even if it is 6am.
4. Photos
Only now. Reshoot the three best-selling formats with better light. Do not reshoot everything, or you will spend a weekend on it and still not post.
Do not add a new lane. The temptation when stalled is to start something else. A second lane halves your posting frequency on the first.