Convertible car seats (Wheaton)

Any color please. (Looking 2 if possible) a gently used rear facing convertible car seat for my baby and for my older toddler.
Growing out of the infant bucket seat and one baby in the convertible style already but the only seat I could get for her only does a forward facing and need rear facing for both please. Any brand convertible

Only looking for non expired car seats that has not been in any accidents, please. ( manufacturer date after 2014) I will be using these for my 2 kids.