iPhone SE boot loop after battery and screen replacement

I recently changed the battery and screen myself on my iPhone se 3 because sending it to apple or a shop is too expensive. I used a iFixit battery and a Amazon screen thats in the middle of good and decent reviews. It booted up fine after the replacements but when I left it to charge (Note that this iPhone was my dad's iPhone before he switched to Samsung) my dad handed it to me saying that it's not turning on and showing the iTunes logo. I don't own a windows or MacBook to restore it. It was updating to the newest version of ios available which was iOS 18.6.2. I took it to Apple yesterday and they said that the issue is the battery and screen as it's not genuine and could be the reason why it's bootlooping and quoted 280$+Tax for the battery and 180$+Tax for the screen. That's basically more than the phone itself! Is there a way to fix this? I don't wanna resort to buying an iPhone after spending money on it to be bricked.

[Re-Titled by Moderator]

Original Title: iPhone bootloop