The aggregate in quickcrete is going to be too much for a 1/4 inch thick patch. Floor leveler will hold better and will be adequate in the shallow areas. There is also a product that prepares the surface before you make the repair.
You pour it on and spread it out, it helps bond the patching material to the old surface.
Do the deeper area first and then do the shallow area and the feathering with the floor leveler after the concrete sets.
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