Could you explain why I should trust Lisinopril for high blood pressure? Are there any alternative medications that you would recommend?

As good as any but. I think you can trust Lisinopril as much as any drug for high blood pressure, but you can only trust drugs to lower BP, never to cure you. There are dozens of other drugs but I advise trying exercise, meditation, weight loss, Magnesium Taurate, Hawthorne, a diet low in meat and starches but high in fruits and vegetables and a device called Zona- see https://www.zona.com Ayurvedic herbs help too.