It is very hard to brick a Samsung! If you are using Windows then Odin [1] will be available.
Does Odin see the device ?
If yes, TWRP for your device https://dl.twrp.me/herolte/ is available as for instance twrp-3.6.1_9-0-herolte.img.tar. The .tar file extension allows this to be flashed with Odin. There is a guide here [HOWTO] Install /e/ on a Samsung smartphone with Windows easily – See 6) Install TWRP
[1] Reference https://doc.e.foundation/pages/revert_samsung_to_stock_on_windows