Hi @cluelessgiget
Did you check the charging port for damage? Look inside for bent/missing pins. Also plug in the cable and gently push up and down to see if the port itself is loose.
If you need a [https://www.ebay.com/itm/RCA-PRO10-Edition-RCT6203W46-10-Tablet-USB-Charger-Charging-Port-Dock-Connector/142370116558?epid=1362886472&hash=item2125eb93ce:g:bucAAOxyY3ZRnnrB|replacement port], the process will require micro-soldering.