Solved.
sudo systemctl stop lighttpd
sudo systemctl disable lighttpd
Switched ports (settings, webserver & api) and fixed 8080o,443os,[::]:8080o,[::]:443 with defaults so no more '8080' (80o,443os,[::]:80o,[::]:443)
sudo netstat -tulpn | grep :80 = LISTEN
sudo systemctl restart pihole-FTL
All good /etc/unbound/unbound.conf.d/pi-hole.conf
sudo netstat -tulnp | grep unbound = on Pi 5335 NOERROR
sudo pihole -v
Core version is v6.0.3 (Latest: N/A)
Web version is v6.0.1 (Latest: N/A)
FTL version is v6.0.1 (Latest: v6.0.1)
Still having issues accessing we using https://
Anyways, thank you for the help and kudos to this post.