How to fix QBooks an begin again

I need help really bad. I started with a real estate/ construction company in March 2022. I purchased QBooks an vegan setting up the company best as I could never doing accounting for a company that buys properties( apartments) rehabs them then hires property managers to run them. My part of this is the rehab side. Construction. The company last year did books in a spreadsheet with lump set numbers nothing to carry over to new year 2022. I linked the bank account an transactions from Jan to March downloaded. Which they’re nothing to match to. Most bills they set up as Ach payments so nothing in A/P I’ve tried to catagorize the transactions but it’s not going very well. We have a lot of transactions that are billed to a property and a lot of transactions that the company is responsible for. I would get my bosses credit card bill from his assistant to pay then she would breakdown which property was charged what expense an then break down the companies expense part. I invoiced each property a lump sum each time now that I linked the ccard to Qb all the teansactions from Jan to end of December downloaded. I don’t know what to do with them since ALOT of the transactions were already invoiced to the properties or what to do with the companies responsibility to pay. There are assets never recorded from last year a truck we still pay on an 2 condos an another truck purchased this year never recorded but pay every month by Ach. It’s a NITEMARE I’ve never reconciled any account yet an it’s time to give my books to the accountant 

do I delete everything an start over then work 24/7 to get the 2022 books correct! I’ve done accounting for many many years but never this kind I just want to cry