Recover data, photo, & video from a dead water-damaged Android phone

**Question Recover data photo video from a dead water damaged android phone** I have a old android mobile which was kept on table on which glass of water falled and water entered the mobile as its battery was attached (unremovable battery) inside I couldn't remove it I desambled and unpluged the battery wire and kept the open mobile for three days in sun and then connected and swtiched on it vibrates with no display. I went to service center they without looking to it said to change motherboard and cost of motherboard is more then the new mobile then I went to local guyz they said whole mobiles display screen motherboard battery all will be changed and declared it dead damaged after 5-7 hours testing r&d I had important data in it. I tried to find motherboard of mobile online or any old same model same company old model second hand mobile I founded a old second hand mobile working but following before buying I have questions in mind 1. Can I recover the data from damaged mobile if yes how 2. If same mobile screen or board is available then can the data internal memory be fixed into another mobile 3. As the mobile is dead and vibrating can we boot into bootloader or through adb commands can recover from pc connecting mobile. If yes how 4. How can we get the data from the damaged mobile any how any trick or experts advice 5. If display screen is changed of damaged mobile then is it possible to recover data 6. if motherboard of the damaged mobiles is changed and as the storage chip on main board then is it possible to recover data Additional UPDATED Just now after 6onths i again unscrewed dissambled the mobile is didn't saw after taking from local engineer now a bad news the battery is swollen and is useless to power charge them it's now working As the mainboard/ display/battery if bought all new spares will cost is more than mobile cost and heavy I have option to buy another second hand old mobile of same model and try to replace or test my old water damaged mainboard with second hand working mobile phone and test if the data can came out becuase the engineer said display battery and board all have to be replaced ... I again unscrewd dissambled the mobile is didn't. Heckled after taking from local engineer now a bad news the battery is swalen and is useless to power charge them As the mainboard display battery if bought all new cost is more than mobile cost and heavy I have option to buy another second hand old mobile of same model and try to replace or test my old water damaged mainboard with second hand working mobile phone and test if the data can came out because the engineer said display battery and board all have to be replaced ... **My question is if I replace swap the new second hand same.model.mobiles mainboard with my old damaged mobile and if it works fine and if not then is there chance to shot the display or battery or other parts to (if my water damaged mainboard is shorted damaged) then will it damage the display of new second hand mobiles mainboard to while testing or will the other mobile work if done carefully**