How to remove broken links (from deleted pages) completely?

So I was running my website through some diagnostic tools before launch and I discovered that I had a lot of broken links. I have deleted most of these pages and I setup 301 redirects for a couple pages that were giving me a 404 due to using similar names.

Right now, I have 6 broken links (404) and 4 301 redirects. Should I be concerned about these?

Is there a more effective way to completely remove these pages that are no longer needed? Perhaps in such a way as to also not have to use 301 redirects?

Thanks,
Devin


Here is my site Read-Only: https://preview.webflow.com/preview/c-merak?utm_medium=preview_link&utm_source=designer&utm_content=c-merak&preview=695977c572615b1dbfefdcb2d5233748&mode=preview