There is a very large selection here. My current recommendation is, among others, Cookiebot. It is a simple and cost-effective option among the available cookie plugins.
Here is how you set it up yourself:
Registration: Visit the Cookiebot website and register for an account. The cheapest version is usually sufficient.
Installation: After registering, install the Cookiebot plugin on your WordPress website.
Account linking: Open the plugin in your WordPress dashboard and link your Cookiebot account to your website.
Banner customisation: Log in to your Cookiebot account and personalise the appearance of the cookie notice banner.
Cookie categorisation: Cookiebot scans your website and categorises the cookies found into "Necessary", "Marketing" and "Statistics", usually within 24 hours.
Privacy policy: Insert the shortcode [cookie_declaration] into your privacy policy to automatically list the detected cookies there.
Note: I do not guarantee that Cookiebot captures all cookies correctly or categorises them correctly. Its use should be reviewed by your data protection officer and is at your own risk.