Decided to get the Galaxy S6 touchwiz on my Galaxy S5, downloaded a zip file, instruction said that I should flash it with TWRP, which I did, downloaded the app from playstore, loaded it up in TWRP and clicked "flash", at that time I had no idea what recovery is (and I still don’t) and of course I didnt have any of that installed. So after this step, my phone will turn on, Samsung splash screen animation will appear, and after that windows keep popping up saying "this app has stopped working", same goes for each and every app that I have on my phone. After it runs through all of the apps, phone just turns off.
I know I’m stupid and it’s completely my fault, but is there ANY way to get the phone back up and running? Or getting my data back?
Any help or advise will be greatly appreciated, thank you.