Likely dead battery, extremely concerned about data loss.

Recently, I've been having battery issues that were concerning to say the least. For the last two days, I went to charge my iPhone overnight, but when I woke up, I found that the phone hadn't charged at all, and I ended up using an external battery to charge the phone with no issue. I tried clearing out the charging port with a toothpick, but the issue kept occuring! Today, the phone ended up dying, and when I got it powered up and checked the battery history, it said that the iPhone didn't charge at all, and eventually fully discharged. I also saw that the phone said my battery was not verified, and that Face ID had an issue, despite never having opened my phone to replace the battery or tamper with FaceID. The battery also refused to charge, remaining at 0 percent, and I had to plug in an external battery in just to keep it on. A couple hours later, it entered into a bootloop whenever I plugged it in, and i took it off the battery to let it rest. Is there anyway to save my phone? Or even just create a backup to save my data?