These days to make your site secure, you need to use SSL certificates. There are three types of SSL certificates, such as DV, OV and EV . You will have to spend money for EV and OV but you can get DV from Let's Encrypt. For normal sites DV certificates can be good. Some webhosts provide DV certificates for free where as some web hosts do not offer free certificates and you have to buy them. Do you pay for your SSL certificates?