the site does not provide feature for cancelling the renewal to my subscription which is about to be billed in February 2, 2025 (i have a subscription for 2 years already but need no more)
Where have you looked ?
Cancelling automatic renewal of the Avast subscription - See https://support.avast.com/en-en/article/35.
Also see:
Orders and Renewals FAQ - https://support.avast.com/en-ww/article/Alternative-unsubscribe/.
Scroll down to the “How do I cancel automatic renewal of my Avast subscription?” option.