Is that a way to erase all data on my phone without factory reset?

I have a Nokia 5.4 which keep frozen at the start up screen. (I have asked about it here , if you want more details) As there isn't even a factory wipe option in the recovery mode, it seems it is not usable again, so I have bought a new phone, and I am thinking what to do with my old phone. My old phone was my primary phone and it has all sort of important data in it (e.g. work email, bank login, etc) I have backup on those data, so I don't mind losing those data, but I cannot risk having those data exposed. If I would like to sell my old phones for parts, to make sure those data will not leaked in case the buyer is skillful enough to repair it, is there a way to wipe those data before I sell it?