Pihole Dns is not working

I am using Raspberry pi 4 and docker. I installed Pihole on docker.
I can access to Pihole admin page but I can't connect internet pages after changing Dns server ip to my pi server ip.

here is my debug token:
https://tricorder.pi-hole.net/itthsrwb/

(Debug log hidden by moderator)

Which IP address have you been using?

Run from a client(!), what is the result of the following commands:

nslookup pi.hole
nslookup flurry.com <pi.ho.le.ip>

For the latter, substitue <pi.ho.le.ip> with the IP address you've been using.

Thank you for reply. I am using my raspberry pi server ip(192.168.0.101). It is available to access admin page, but now working as DNS server.

I used your commands on cmd and said:
DNS request timed out.
timeout was 2 seconds.
Server: UnKnown
Address: 192.168.0.101