1. Try increasing hotend temp for first few layers and hotbed temp throughout
2. Try moving z closer for first layer
3. Repeat both of above in small increments

FWIW, those PEI sheets usually need higher bed temp than the regular sheets

Thanks everyone. I raised the initial temp by 5 degree, and reduced the z-offset by 0.05mm. It looks great now

https://imgur.com/a/Vd24Skm

it is printing the fidget star now. Note, that each star has a thickness of 2 walls. The 1 corner is a little bad, because i took to much to time adjust the z-offset.

It looks like the extrusion lines could be smushed down a bit further onto the build plate, can you set your z-offest downwards a bit so that the lines merge together more?

Have you tried scrubbing the plate?

My prusa mini plate probably looks awful, but there is a layer of hot glue on top which helps. Once my first layer is down, I drop from 60 to 30c. Also, I find silk just sucks as a base layer. I often use some black pla as a base then switch after base.

120grit sand paper give it a scuff and rubing alcohol before each print. That solved almost all of my issues with bed adhesion and let me get away with it where normally it would fail. Anything else it's probably out of level bed or actual frame of the machine has a bend or low spot. If your z offset was bad you would have that happening all over the the first layer. If you have a bl touch on your set up, make a grid amd write down each number if there is a difference in the corners it's bed level If it's middles / sides it's a low spot in frame some materials tolerate out of level better then others.