There are two huge problem with remote freelancing sites, and this one is no exception: Scams, scams, scams, scams, scams. Unvetted job posts lead to scam after scam, most of which are obvious (little-to-no detail, crazy overpayment for simple tasks, bad grammar, etc), some are a little more clever, which I assume are just job descriptions lifted from elsewhere, then they start asking you for weird info and redirect you to other sites.
And of course there's the other thing: The pay. If you live in the United States, or Europe, or Australia, or any similar nation, you're going to find most of the work is underpaid because there are 100,000 people from Kenya or India or Pakistan willing to do 10 hours of work for $41. That is a literal real example that I pulled. It is SUCH a waste of time.