Can I rely on natural anxiety remedies that purportedly have no side effects?

Name: Priya Date of Birth: 21 August 1996 Place of Birth: Hyderabad Time: 07:10 AM. I have seen dozens of natural anxiety remedies/herbs, oils, supplements that promise no side effects. I'm not trusting them. I've had some and got headaches or tummy upset. I want to know if there are truly effective natural remedies that don’t mess with my body. I am sick of trial and error and just want something that is functional without resulting in new issues. Are there any proven alternatives that are actually safe and side-effect free?