Stuck on boot loop[SAMSUNG],Need to backup

I would like to know is there any way to **backup Samsung A20s device through download mode/bootloader mode?** My device went into bootloop tried so many things only left to reinstall firmware but its lost user data so i need to backup before doing that any way? How it happens- - Charging over night besides my bed, - My hand touch the adapter and some cracks in the socket heard - The charger still working and charging other stuffs. - In the morning my device turned off randomly. - When I wakeup the device shows you >Device unable to bootup normally with suggesting three options >1. Try again - tried so many times still fails >2. Wipe app data (which is I think safe but needs a backup before doing that, thats what I'm looking for right now) >3. Poweroff - even after powered off its on again (automatically without my actions) and kept doing the bootloop Well why I mentioned the charging case is because that's the only thing i know before this happening (I'm in sleeping too not remember what happens after that),and I doubt if its any in case trouble in the mobile board so that's why I mentioned. Likely I don' think it was that but a doubt. And **I am able to enter recovery mode and bootloader mode (entering via recovery and show download mode (idk is that download or bootloader mode or these 2 things are same, I tried a backup using download mode in realme devices but not with Samsung)** And when I tried to enter recovery it shows a android image and with error text labeled under the image. It shows for a split second and boots into recovery mode. Also happens with powerup mid bootloop (when I saw this I thought some firmware bug. Because of this, that I thought the charging case is not the issue, not sure till now. Is there any way i can fix this? have any method to backup?