Wrong Facebook Business Account Linked With Business Instagram Account

We currently have accidentally created 2 Facebook accounts. One of which is currently linked with the Facebook Pixel, our website, Ads Manager and Instagram. We also have another Facebook page in which we have been posting our photos etc., which is not linked to our website, Ads Manager and Instagram.

We would like for the first Facebook account to be deleted and for the other one (our active one) to be configured from the start properly with pixel, website, product catalog, ads managera and Instagram.