It is normal for freshly injected chins to feel ball or egg-like for up to a couple weeks following treatment, that will soften out and feel more natural with time as the filler integrates. However, asymmetry can and should be corrected using hyauronidase. This should be addressed before adding any more filler to the area.
From the images it appears that you have radial cheek lines when smiling. These can be treated with thin fillers like RHA2, redensity, restylane Refyne. Going with a thinner filler in this area will provide support to reduce folding without adding bulkiness or creating a heavy feeling in this area.
Biostimulators are also helpful in strengthening tissue in this area to reduce folding. Biostimulators are similar to fillers but work over time to promote collagen production.