Replacing Battery Caused Phone to not Turn On Properly

Hello, I just replaced the battery of my s10 because my old one was beginning to lose a lot of longevity. I ordered the tools to do the replacement here, including the battery, and was able to do it without too many problems. As I put it the new battery I tried to turn on the phone and it worked like normal so I closed everything up but now something's gone wrong.

First, the phone only works at all while plugged in. Otherwise its completely unresponsive. Second, while it is plugged in, it gets stuck in a loop of booting and getting to the Samsung s10 logo or showing the charging icon with a lightning symbol but no numbers but then reseting multiple times. Sometimes though it's let me past the boot stage and use the phone. At one point I was able to turn on the phone and use it for about 30 minutes while plugged in without issues but as soon as I took out the cable it shut off like before. I tried to start the phone in recovery mode to delete the cache data, which worked, but now its stuck in that mode and I can't get past it. It's able to go into download mode or recovery mode without a lot of problems but anything else doesn't work anymore.

I think it may be an issue with the battery not charging or something like that or the phone not recognizing the new battery because when it did work it seemed to think the battery was at the level the old one was at, but I'm not sure what to do. Thank you to anyone who can help!