You can use the Filter and Search options to discover influencers on YouTube and Instagram. The first option allows you to filter influencers by their audience, location, recommended price (this is only available on YouTube for now), and content. With Search, you can find influencers by entering their channel name, ID, URL for YouTube and account name, @handle, and URL for Instagram and TikTok.
Filters are more convenient if you want to discover several influencers per search session.