Google Pixel 4a 5G not booting

Hello, I have Google Pixel 4a 5G, long story short is that it fell on the ground like 6 months ago (height like 1 meter), and it stopped working, couldn't charge it and dead display, but I was using other phone for some time, but now I need that phone (at least data), so I bought display replacement part from ifixit.

I replaced display (I was replacing displays many times in my life, so I have experiences with it) and it didn't help, still couldn't turn it on, nothing black screen, it doesn't even vibrate when I plug it into charger. So I disassembled it completely to see if there is not something damaged on the motherboard, everything looks normal, so I thought maybe charging port was broken when it felt on the ground, so I bought USB-C charging port replacement part from ifixit, replaced it and again didn't help.

There are some photos of my disassembled Pixel 4a 5G, maybe you can see something, or you can show me what could I try or measure with multimeter.

I tried to press top side button (power button) when battery was connected and when battery was disconnected too, didn't start, so battery should not be reason, because it doesn't start even without battery connected (just plugged through USB-C port).

I tried to connect it to powerbank too and powerbank was blinking so there should be some power draw to smartphone, I tried to even measure using multimeter voltage old and brand new USB-C charging port and I got some weird values like 0.2V, but I got something, I tried even measure voltage at battery connector port and got similar values, so there is flowing some current through board when plugged to charger.

Now I don't know how to continue :/

New battery replacement: