If you don’t have access to nginx.conf, you usually can’t manually add Rank Math rewrite rules at server level.
In most cases, this is handled automatically if WordPress permalinks are working and Rank Math sitemap is enabled.
If sitemap is not opening, try:
- Flush permalinks (Settings → Permalinks → Save)
- Clear cache (plugin + server/CDN)
- Check if your host already supports WordPress sitemap rewrites
If it still doesn’t work, you’ll need to ask your hosting provider to add those Nginx rules for you or enable “WordPress pretty permalinks support” on server side.