Sorry dstwins but you need to look some definitions and some information.
1:COVID was an airborne virus. The only masks that offered any protection were N95 KN95 or higher rating. The virus could slip through surgical, cloth, and other masks. Again unless the infected person was wearing an N95, KN95 or higher rating they may as well not wear anything at all. If non infected people wear wearing anything less than an N95 of KN95 they were useless. It would be like putting plastic wrap over your eyes to see under water.
3: Oxford definition:
Vaccine: a substance used to stimulate the production of antibodies and provide immunity against one or several diseases, prepared from the causative agent of a disease, its products, or a synthetic substitute, treated to act as an antigen without inducing the disease.
Dictionary.com
A vaccine is a substance introduced into someone's body to prevent them from getting a specific disease.
Britannica:
vaccine, suspension of weakened, killed, or fragmented microorganisms or toxins or other biological preparation, such as those consisting of antibodies, lymphocytes, or messenger RNA (mRNA), that is administered primarily to prevent disease.
Oxford definition:
Immunity: the ability of an organism to resist a particular infection or toxin by the action of specific antibodies or sensitized white blood cells.
I have yet to see a "vaccine" that neither prevented the disease nor prevented the spread of the disease. Not unless you change the definition.
4: It's zoonotic not zoological
As for Hospitals being overrun. Every state ignored the preplans established post 9/11. Field hospitals were supposed to be set up and infected patients were supposed to be brought to the field hospitals. This would keep the hospitals open for other emergencies. Instead they opened field hospitals and would not let us bring patients there. It was bad optics. They wanted to show that the hospitals could handle this without being overwhelmed.
Bad news for you when hospitals are closing offices, cafeterias, conference rooms etc... to convert them to patient space, they are overwhelmed.