You shouldn't trust just about any antivirus company. However, there are plenty of long-standing and decades-old cybersecurity companies, coming with a reputation for preserving their users' right to privacy. We always recommend reading privacy policies and doing some background research prior to choosing an antivirus.
Keep in mind that free-of-charge antivirus solutions are more likely to collect personal information and (after removing any ties to its users) sell it to third-parties. This is why we always recommend going for a premium-priced alternative instead.