Will Netlify subdomain show in google search and affect my SEO results, even when I connected my custom domakn name

Hi. I want to know if default subdomain affects google SEO ranking. I already connected my main custom domain to netlify. Is that it? I don’t have to change anything else? I am just worried that google will think that I am copying from another website or something.

Netlify automatically adds canonical headers: Canonicalización de URL y etiqueta canónica | Central de la Búsqueda de Google  |  Documentación  |  Google Developers, so you should be fine.