bad codes in plugins

!! there is a link “https://sibvinograd.ru/казино-онлайн” shown in the descriptions of my site pages in Google search results.!!

I have installed “Premium SEO Pack – WordPress Plugin” to my WordPress site before two days, but after using it to add tags, keywords, descriptions.. etc to the page of my website, I shocked to find that there is a link “https://sibvinograd.ru/казино-онлайн” shown in the descriptions of my site pages in Google search results.

I don’t have experience to find the bad codes in the plugin therefore I deleted it. but unfortunately the link above still shown on descriptions of my site pages in Google search results.

Can anyone help me to fix this. thanks in advance
Also, i would like to ask, if there is a plugins that have a bad code and i deleted i, would it affect my WordPress files even if after deletion ??