How can I start up my phone after the battery replacement?

Hi!

I recently replaced the battery of my Huawei Nova 3i since it was damaged and after doing so, I can’t seem to boot it up. I tried holding the power button for around 1 minute (without charger) but only shows a red blinking light around the camera area. I tried different button combos (vol up-power button, vol down-power button, vol up-vol down button) to boot it up but with no results except the red blinking light.

I left it charging for around 6 hours and tried again but still no results.

I’m clueless right now. I have no idea on what to do with this phone.

I hope that someone can help me with this. I would appreciate it.
:)