Start taking Vitamin C! Take Vitamin D, too! Then take a balanced form of copper and zinc. All that will charge up your immune system in no time.
After research wherein I found a study showing that a number of common cancers completely lacked zinc in the cancerous tissue, even when it was plentiful in their normal tissues, I added more zinc to the supplements my 2 cancer victims were taking. One of the researchers in that study suggested a trial using zinc and an “ionophore” I had never heard of. I had the ionophore Quercetin I bought at Walmart and increased their dose of that as well. I also added Astaxanthine after I read an article saying it lowered the live span of cancer cells while it increased the life span of normal tissue. so I added that. My partner is now cancer free (prostate) and also had 6 weeks of radiation and anti-testosterone shots. My brother with metastatic liver cancer was doing well with chemo and his supplements until he had his 4th Covid shot, whereupon his cancer became VERY vigorous and rapidly deadly.