Search Engines, and Google specifically, have implemented algorithm changes that affect websites that are still HTTP instead of HTTPS, without an SSL. This is for users safety and security reasons. If your website does not have an SSL certificate, your organic rankings will likely be majorly affected.
It’s also important for your general web visitor safety to install an SSL certificate and ensure your website displays HTTPS. Your website developer should be able to set this up for you without too much difficulty. As part of our SEO and web design service, our team at DISRUPT Creative Agency can also help with organising and installing an SSL Certificate on your website.