Kindly refer to the following link(s):

Difference between Sadaqa and Zakat - Sheikh Assim Al Hakeem

Illness / Sick

Giving sadaqa when faced with an illness | By Assim Al Hakeem

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 | By Assim Al Hakeem

Frequently giving Charity | Sheikh Assim Al Hakeem

Is giving charity on behalf of others and many people valid?

Can we eat from our own Sadaqa