Sysadmin Nginx redirect requests to non existent sub directories and files to the root dir

I want to redirect all requests for non-existent subdirectories and non-existent files and files within non-existent subdirectories back to the root page.

Ex. sampledomain.com/jahsdjksf/sfhsafh.php or sampledomain.com/jahsdjksf/sdfsndf/sfhsafh.php or sampledomain.com/sfhsafh.php

all back to sampledomain.com

currently I have the following added to my rules

root /home/nginx/domains/randwebsite.com/public/; index index.php;

and

try_files $uri $uri/ /index.php;

but the issue is when I try any random non-existent sub dirs it loads the main page under that url and its broken as the css etc is using that url with the non-existent sub dir however only works perfectly with non-existent files with no sub dir added ex. sampledomain.com/sdlfsdlfsf.php

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i tried that, i didnt want the error pages coming up so i changed the 404 to just / instead of /404...

but it doesnt work, just brings up the main page and its broken, i would prefer if the person is fully redirected back to the main page