I am experiencing breast redness and breast lump (quality: tender, swollen lump).

Need to examine. It is not feasible to provide a meaningful opinion without examining you and your symptoms warrant evaluation by a physician. What you described is not a sign of cancer, but you should still see your doctor. For good health - Have a diet rich in fresh vegetables, fruits, whole grains, milk and milk products, nuts, beans, legumes, lentils and small amounts of lean meats. Avoid saturated fats. Drink enough water daily, so that your urine is mostly colorless. Exercise at least 150 minutes/week and increase the intensity of exercise gradually. Do not use tobacco, alcohol, weed or street drugs in any form. Practice safe sex, if you have sex. Get HPV vaccine.