It wasn't and isn't solely "our government" that was or is responsible for investigating the origins of Covid...but the organized western world, through the World Health Organization.
They know it came from bats. They know it came from China. Facts. Beyond that, when the Chinese (what a surprise) were not cooperative in the investigation, I don't think accurate results were achieved. Personally I believe nothing from China. Why they even fool around with bats is beyond me. Before Covid, it was SARS, remember that? But I surely don't blame our government, Trump, or Biden or their respective administrations for anything with Covid. Regarding Covid, they all did the best they could with the knowledge they had at the time...that's both Trump and Biden. A family friend, someone who thought the vaccines were a government conspiracy, got the virus and died. A 36 year old mother, left behind a husband and child. To quote the former president, SAD!
Yes, many drugs have been withdrawn over the years...here and abroad. And things change, too! They used to recommend a low dose aspirin for senior to help prevent strokes, but now they say no. But I'm sure as heck happy that they developed the polio vaccine, and that many diseases have been just about eradicated. These achievements were not done made by a bunch of yokels in a garage, but esteemed researchers with noble goals. Dismiss them if you will. Thank your parents for getting you the polio, smallpox and TB vaccines when you were too young to know better.
But y'all believe what makes you happy.