Be sure to invest in projects that have some level of value to offer.
About audits, most projects pass a simple audit by some unknown company, however, it is advisable to look out for projects that have passed multiple audits at different stages of the project’s life. And also, the audit must have been done by a credible, reliable and reputable blockchain security firm.
Typical Example of such firms is HashEx; they have been around for over 5 years and have carried out audits for over 700 smartcontract audits, reporting a 99.9% perfect job.