An SSL certificate secures your website from hackers and third parties. SSL certificates create a virtual padlock in the browser address bar confirming that you are communicating with trustable and secured servers.

Your SSL certificate is a confirmed credential that you are who you say you are which builds trust.

Google made an announcement back in 2018 which stated it will mark all websites without a SSL Certificate as “Not Secure”.
https://blog.chromium.org/2018/02/a-secure-web-is-here-to-stay.html

Even if you’re not selling something, every website needs an SSL Certificate.

Every website we create includes one.