Kindly refer to the following link(s):
Difference between Sadaqa and Zakat
Illness / Sick
Giving sadaqa when faced with an illness
Can we give sacrifice of an animal when someone falls sick?
Charity for a Sick person: Slaughtering a sheep or giving Cash? Which is better?
What are benefits of charity Sadaqa
Is it appropriate to tell a sick person that you gave Sadaqah on their behalf?
Is giving charity on behalf of others and many people valid?
What is Sadaqa Jariyah (Continuous or Ongoing Charity)?
Sadaqa Jariya VS Sunnatul hasana
Is Charity (Sadaqa) given in Makkah have more rewards than given in other places?
Is giving gifts the same as giving charity?
Can we eat from our own Sadaqa?