Temporary failure in name resolution on ubuntu server 22.04

For some reason my RPi running ubuntu server 22.04 stopped resolving names.
e.g.
Code:$ ping google.com
ping: google.com: Temporary failure in name resolutionAlso:
Code:$ resolvectl status
Global
Protocols: -LLMNR -mDNS -DNSOverTLS DNSSEC=no/unsupported
resolv.conf mode: stub
DNS Servers: 8.8.8.8 1.1.1.1

Link 2 (eth0)
Current Scopes: none
Protocols: -DefaultRoute +LLMNR -mDNS -DNSOverTLS DNSSEC=no/unsupported

Link 3 (wlan0)
Current Scopes: DNS
Protocols: +DefaultRoute +LLMNR -mDNS -DNSOverTLS DNSSEC=no/unsupported
DNS Servers: 8.8.8.8 8.8.4.4 192.168.1.1

Link 4 (wg0)
Current Scopes: none
Protocols: -DefaultRoute +LLMNR -mDNS -DNSOverTLS DNSSEC=no/unsupportedeverything seems to be ok here..

Code:$ cat /etc/resolv.conf
# This is /run/systemd/resolve/stub-resolv.conf managed by man:systemd-resolved(8).
# Do not edit.
#
# This file might be symlinked as /etc/resolv.conf. If you're looking at
# /etc/resolv.conf and seeing this text, you have followed the symlink.
#
# This is a dynamic resolv.conf file for connecting local clients to the
# internal DNS stub resolver of systemd-resolved. This file lists all
# configured search domains.
#
# Run "resolvectl status" to see details about the uplink DNS servers
# currently in use.
#
# Third party programs should typically not access this file directly, but only
# through the symlink at /etc/resolv.conf. To manage man:resolv.conf(5) in a
# different way, replace this symlink by a static file or a different symlink.
#
# See man:systemd-resolved.service(8) for details about the supported modes of
# operation for /etc/resolv.conf.

nameserver 127.0.0.53
options edns0 trust-ad
search .But if I change the nameserver here the file is reset back to these values.

Code:network:
ethernets:
eth0:
dhcp4: true
optional: true
version: 2

wifis:
wlan0:
link-local: [ ipv4 ]
optional: true
access-points:
"ssid-name":
password: "password"
dhcp4: true
nameservers:
addresses: [8.8.8.8, 8.8.4.4]Code:$ nslookup ubuntu.com
;; communications error to 127.0.0.53#53: timed out
;; communications error to 127.0.0.53#53: timed out
;; communications error to 127.0.0.53#53: timed out
;; no servers could be reachedI also tried Code:mv /etc/resolv.conf /etc/resolv.conf.bak and:

Code:$ nslookup ubuntu.com
;; UDP setup with ::1#53(::1) for ubuntu.com failed: address not available.
;; UDP setup with ::1#53(::1) for ubuntu.com failed: address not available.
;; UDP setup with ::1#53(::1) for ubuntu.com failed: address not available.
;; communications error to 127.0.0.1#53: connection refused
;; no servers could be reachedI also tried to open 43/tcp and 53/udp with ufw but that didn't help..

What else can I do?