My daughter is having cough, cold and blocking chest, recommend me some home remedies for her. She is 2.8 years old

Best is give steam to your baby. Steam will help in bringing out the mucuc. The baby may cry while taking steam but that is good in a way because that will open up her lungs and will let steam go inside the chest in a better way. She will get whole lot of relief after taking steam. You can also put saline water in her nose. Also, consult with the doctor if condition doesn't improve.