Is there anything good for recovering my body?

I always thought I was healthy

Lately, I've been getting rhinitis and a cold, and then I get better and then I get it again.

These days, I feel sad because I have to catch a cold longer than my children and then recover.

My body is losing stamina. Is there anything I can do to help me recover?

There are a lot of advertisements for vitamins and albumin these days. Should I take these?

I feel like my body is losing energy.