Sentences

How to say these sentences grammatically.

I was very naughty in my childhood couldn't been able to concentrate on study.

I cried a lot when my father died for the agony/sorrow of his death.

My father used to sit in front of my study table and tell me that one day you will cry when I'll no more/die.

My father provided me everything for my study so he left no point/reason to blame him.

As far as my family concerned my parents are no more Mom died in 2010 and Dad in 2011 the date was same. I have two younger sisters and one brother. The sister that immediate younger to me was married in 2016, now she has a daughter.

Please help me.