Your most critical problem at the moment is the low pH reading. Readings below 7.0 are acidic and can damage your pool. Add a half a box of Borax slowly to the skimmer while the pump is running breaking up any clumps. After a few hours, retest pH and then add more Borax as needed until you get the pH above 7.0. (Anywhere between 7.2-7.8 is fine with 7.4-7.6 being best for most pools.)
Add a gallon of plain, unscented household bleach. (Most of us use Walmart's generic bleach.) That should add about 10ppm of chlorine.
Do you have a test kit? If so, what type? What are chlorine drops that you are using?
I think you are going to have to get some type of vacuum or else there is no way you can keep your pool clean.
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