iPhone 6s disabled after screen and battery replacement

Hi,

My iPhone 6S screen had stopped working so I decided to replace it, and while I was there I also wanted to replace the battery as that had stop holding charge.

I replaced the screen without issue, but on removal of the battery it pulled up and broke the volume control flex cable. I bought the phone second hand and it seems as though this might not be the first time the battery had been replaced as none of the guides to do the replacement really matched what I had to deal with, which ultimately lead to some prying.

Anyway, once I turned the phone back on I am greeted with the screen saying “iPhone is disabled connect to iTunes”. I believe this is because whilst my screen was broken it was still sending input to the phone (which was still on) and was continuously attempting and failing to sign in.

I do not have an iTunes back up and I can not currently use the power button because it is controlled by the now broken flex cable. At this point, I just want my data, I am happy to just buy another 6S.

If I connect the phone to iTunes without a backup, realistically is there going to be any way to retrieve my data or re-enable the phone?

If there is it might be worth me fixing the flex cable so that I can use the power button as right now only the Home button works.

Thanks.