While it’s not entirely ruled out, the lab leak hypothesis is looking less and less likely for a variety of reasons. The most likely suspect at this time is a raccoon dog sold at a specific wet market in Wuhan about 7 miles away from the WIV lab. This has not been proven yet either, it’s just the most likely, so ultimately we still don’t actually know.
There was a deep-dive article about it in the NYT Magazine recently.