Many struggle with the idea that they have committed some unforgivable sin. They think blasphemy against the Holy Spirit, or some other offense against God, has made them beyond the forgiveness of Jesus Christ. The biblical truth is that the only unforgivable sin is to not put our faith in Jesus Christ for our salvation.
The specific blasphemy mentioned in the Bible was a specific thing related to a specific people at a specific time. This situation with the Pharisees’ cannot be duplicated today. You need to view the context of the situation, where the Pharisees were attributing the miracles of Jesus to Satan. They were completely rejecting the Holy Spirit.
We are all sinners but Jesus paid the price for ALL sin and offers each of us His grace and forgiveness. We encourage you to confess your sins to God and lean into Christ.
If you still struggle with these thoughts, then take a look at this short article at GotQuestions.com and then we can discuss further.