This year, Google is going to start penalizing website owners who do not have an SSL certificate (websites with these will start with https:// instead of http://). For websites that accepts payments or collect information through input fields, this is an important feature, but for 2/3 of websites out there, it’s a somewhat unnecessary and possibly pricey requirement (https://serverguy.com/security/google-forcing-ssl-certificate-websites/).
For everyone else, there are opportunities to install free certificates. These certificates do not offer the protection that pricier ones do and should not be used by anyone collecting information through forms or offering online payments, but they are a possible work around for everyone else. For more information about free certificates and to see if they will meet your needs, check out this blog post: https://www.elegantthemes.com/blog/tips-tricks/how-to-get-a-free-ssl-certificate-and-why-google-is-forcing-you-to