But if they were Christian and repented on their death bed and...

But if they were Christian and repented on their death bed and sought forgiveness, would they then go to heaven?

non-sense. repentance does not work if you are grovelling to 'god'. repentance only works if you see clearly the harm & evil of your behaviour. if your saw the evil & harm of your behaviour then you would never do that behaviour, let alone have urges to do it

they go to hell because whatever occurs on their death bed is just more selfishness

the evil doer goes to hell

that's it