No, widgets don't make a website accessible / WCAG conformant. overlayfactsheet.com and overlayfalseclaims.com are excellent resources to learn more about why widgets / overlay widgets don't make websites accessible. Note that some plaintiffs' law firms also target websites with overlay widgets installed.
i see quick fix services that use widgets, is that good enough?
No, widgets don't make a website accessible / WCAG conformant. overlayfactsheet.com and overlayfalseclaims.com are excellent resources to learn more about why widgets / overlay widgets don't make websites accessible. Note that some plaintiffs' law firms also target websites with overlay widgets installed.