My contract is automatically renewed with a year without my knowledge

I apologize for writing in English . I am still learning Dutch and struggle with expressing complex issues in the language.
I am reaching out to understand why my internet contract was automatically extended for another year after its expiration date instead of being converted to a monthly plan.
Is this a standard practice?
To provide some context, I moved to a different house six months into my KPN internet contract. Unfortunately, my new home only has a copper connection with a maximum speed of 20 Mbps. Given the low speed, the fees I'm now facing seem quite high. I was anticipating the contract would end upon its expiration, but I was surprised to find out that I am now committed for another year. Is it possible for me to transfer my contract to a more suitable provider under these circumstances?
So far, this situation, combined with the poor speed and automatic renewal for an additional year, feels like an unsatisfactory experience. I received a phone call stating I had been informed, but my mailbox only contained bills and offers to connect to Spotify.