How to set up redirects with nginx?

I’m trying to mask an affiliate link, so I want to have a 302 redirect through nginx

I want to redirect all /go links to the respective affiliate link, so all link redirects would be like mydomain.com/go/affiliate redirects to > https://www.affiliatelink.com

I have tried this

location /go/affiliate {
       return 302 https://affiliate.example.com/;
}

I have also tried using map

map $uri $aff_redirect {
    default            "";
    "/go/affiliate"    "https://affiliate.example.com/";
    # more links
}
if ($aff_redirect) {
    return 302 $aff_redirect;
}

I have tried everything and I cannot seem to be able to get it to work. Is there a specific file I need to do it on?

I have already tried changing on /sites-enabled/default and /conf.d/nginx.conf and /sites-enabled/mydomain.com-ssl.conf

Might be a silly question, but have you restarted your NGINX daemon between each edit?

Yes I did, sudo systemctl reload nginx every change I did