[Samsung Galaxy S7 (Exynos) ROMs, Kernels, Recoveri] Umbert34:
HELP! VERIFICATION FAILED! (if this post is wrong here, sry im new)

I´m very new to all this tech stuff, also to this site and am learning while researching aka im a fkn noob ._.

for the first time ever i tried to root a phone (since i deleted personal data and heard it can be saved through recovery programs, if they have root access) my Galaxy S7 SM-930F with (CF-Auto-Root-herolte-heroltexx-smg930f.tar.md5) using odin (and made all the mistakes possible, i guess).

Rebooting my phone i got the "Verification failed. Unable to restart your device. The Integrity Verification failed. Yor need to reset your device to factory settings. This will delete all your data." message and cant access my phone. I have no backup of my personal data and apps (bc im a fkn idiot) and really dont want to lose all of it.

From what i seem to know now the message im getting is a security system to prevent modifications on the phone, so it freezes and forces to factory reset to get rid of potentially harmful software.

At first i tried to flash the stock rom back, downloaded from sammobile (Oreo, i hope it was the system i had before, i dont know sadly). im from germany, so i chose the DBT version (G930FXXU8ETI2_G930FDBT8ETI2_DBT). i used home-csc hoping to keep my personal data.

Odin worked, but i still get the same message forcing me too factory reset. i tried with second oldest version (G930FXXS8ETC6_G930FDBT8ETC1_DBT), also no change.

(in recovery mode at the bottom it says "Successfully verified dmverity hash tree", i think thats good).

i opened the phone, disconnected the battery and rebooted after a few minutes (im desperate here, but apparently for someone else it worked).

i wiped the partition chache in the phones recovery mode. no change

next i flashed twrp (twrp-3.5.2_9-0-herolte.img.tar) through the AP box in odin on the phone (turned of auto reboot). i was able to get to the twrp menu through recovery mode.

then i put the "no-verity-opt-encrypt-6.1.zip" on an sd-card and installied it though the twrp menu (i unchecked the "skip digest check before installing zip", if that helps here). from the jibberish on the screen it seemed to have failed to install (i think).

(One source also mentioned "no-verity-no-encrypt_ashyx.zip". i dont know whats the difference to the above, but i thought id mention it here too.)

After rebooting, same message.

I havent wiped my phone yet. there are 2 options in twrp "advanced wipe" and "format data" (where you need to type yes). i dont know whether advanced wipe does something different, some sources say it only affects the system, not personal data and settings, but i afraid to do it.

also, twrp shows 0mb on my internal storage. but one source says that it cant read it so it only shows as 0mb. i hope thats true and my stuff isnt wiped already.

EDIT: I tried the advanced wipe options on everything except internal storage, it failed.

Many of the tutorials and solutions i found to far seem to conflict or to be outdated. apparently cf autoroot is outdated too, good to know :). Since im a noob, i dont know what to trust here.

I havent tried supersu or migisk before (also dont know what they are, but they got mentioned several times).

At this point i dont really want to root anymore or move on, bc im afraid to completely mess it up. i just want to get access to my data and make a backup before i try rooting again (like someone who seems to know what they´re doing, you know).

Is there any way i can save my data here or maybe even finish the root without losing everything? pls help and thx in adavance!