Active job

Please fix me

We have 3 mediums decks around our house. 1 is in desperate need of redoing asap (stairs collapsed and is bowing). We are wanting to have them replaced and have added handrails as we have a toddler who is keen to topple over the edge. They are roughly 1m w x 1m h x 10m L and then the same but 6m L and then theres a small back porch. Ideally to be done as soon as possible but at least before the rainy season kicks in. Have added photos of the side of the worst one