Formatting and Next Steps for Enriching Company URLs in Clay Tables | SEO

Hi There, I'm new to Clay, and just playing around with my first table, I imported a csv of local businesses and tried to enrich company with the companies site URL, but got about 30% "company not found" but if I manually search they have company profiles on LinkedIn where the URL is displayed. Is there any sort of formatting on the URL I should have done before running the enrichment and what should be my next step to find the companies for the enrichment? I only have Google maps data including company URL. Thanks.