Alpha and Delta were somewhat deadly. Omicron is a joke... or is it?

Does this shit actually gives some form of HIV/AIDS? I've seen a couple people who doesn't seem to fully recover and keep degrading physically and mentally since infection or vaccination with the mRNA vaccines. Seems much worse for the older people, the younger ones seems to be able to mostly brush it off, but if we have recurring mutations and infections, it seems that the world could actually be fucked long term. I really hope not. Any knowledgeable person on here? Are we actually fucked or not?