Homepage meta title and description not showing in search engines?

Google doesn’t always show the meta descriptions and title’s that you set. This is taken directly from Google’s Search Console help pages.

Google’s generation of page titles and descriptions (or “snippets”) is completely automated and takes into account both the content of a page as well as references to it that appear on the web. The goal of the snippet and title is to best represent and describe each result and explain how it relates to the user’s query.

https://support.google.com/webmasters/answer/35624?hl=en