@biruklakew this "Open by itself only showing logo" is most commonly caused by the phone not reading the firmware. iFixit is more focused on hardware. I would suggest that you visits forums that deal with software/firmware etc. Something like [https://android.stackexchange.com/questions/251176/samsung-a50-stuck-on-samsung-logo|this one] or the one [https://xdaforums.com/t/a50-stuck-in-bootloop-after-a-system-freeze.4656231/|right here]
Of course, you can try booting into recovery mode and perform a factory reset. Remember that this will delete all of your files that have not been backed up. So, be judiciously with that