Which of the two programs is better to avoid telemetry on Windows?

DoNot Spy11 DoNotSpy11 » pXc-coding or O&O ShutUp10++ O&O ShutUp10++ – Free antispy tool for Windows 10 and 11

Which is better?

Neither. I have used privacy.sexy a lot on the past and still use it to remove some junk but many settings are not advisable. Better is to install Safing Portmaster f.x. as local firewall and just block the requests. This will work better in the long run as Windows tends to install new garbage and change your settings on every update.

Could you share with me the link of these app please?

Safing.io is their website