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There are two issues as follows;
First is your knee pain. It seems to be early degenerative changes. For that, I suggest you do quadriceps and hamstrings strengthening exercises twice daily for 15 to 20 minutes and take medications.
The second is a burning sensation in the soles and feet. It could be due to diabetes, hypothyroidism, or spine problem. So, I suggest you take tablet Altraday (Aceclofenac and Rabeprazole) once daily and tablet Pregabalin 75 mg once daily. It would help if you do the following blood investigations CBC (complete blood count), ESR (erythrocyte sedimentation rate), CRP (C-reactive protein), TSH (thyroid-stimulating hormone), HbA1C (glycated hemoglobin), and RBS (random blood sugar).