Are the 7 deadly sins actually a thing?

Actually Scriptire tells us all sin is sin and that one sin committed in our lifetime is enough to damn us for eternity.

The wages of sin is death. And all who die in their sins will spend eternity in a prison of punishment recieving God's wrath. The amaxing thing is we all deserve that but God in his grace and mercy offers forgiveness thriugh Christ. Jesus paid our fine in full and if we grab at/ recieve the free gift of salvation then we are saved. This is the gospel promise. 

The seven deadly sins isn’t  biblical.
The idea of “seven deadly sins” originated from Proverbs 6 which states- There are six things the Lord hates, seven that are detestable to him: haughty eyes, a lying tongue, hands that shed innocent blood, a heart that devises wicked schemes, feet that are quick to rush into evil, a false witness who pours out lies and a person who stirs up conflict in the community.

These sins aren’t any worse than any other sin in the Bible, and they can all be forgiven with the blood of the Lamb.

God hates these sins mainly because they are some of the most difficult to let go of because these sins have to do with our hearts and are purely committed from the hatred or evil intentions in us as where other sins can be caused from ignorance or the sinful nature we are born with.
With that being said, that doesn’t make any sin committed worse or better, they are all worthy of punishment and all can be forgiven.

These are foundational type sins from which so much can come from. For instance, pride — if you have pride you will also most likely have arrogance, unforgiveness, being unkind, not show love or mercy, struggle with bitterness, and not humble yourself before God to repent. Pride is a foundation from which so much is built off of. It doesn’t mean that pride leads you to hell, but it is just something that has a lot of branches. The same goes for the other deadly sins.

All sins are sin.
Here's some resources to understand it clearly and helps on how to battle it, as a believer 😊