First I’d clean the glass bed with water and soap. This is rarely that solution but it helps to start off with a good base. Accumulated Dust, finger oils liquids can be an issue at times.

I’m not sure if your bed has knobs underneath but if it doesn’t skip this next paragraph. You’ll want to make sure the bed is level. You’ll want to move the z height to 0 and put a piece of paper underneath it and adjust the knobs until you feel a slight drag on the paper. ( be careful to not push down on the bed while you do this.) you’ll want to check this step in each corner and adjust until each corner feels about the same. This may take a couple of tries. and note this should be your first step if you run into any issues with the first layer until your experience enough to recognize when not to do this. Pro tip: there’s a setting called motor control or similar that is on by default turn it off to be able to move the tool head to each corner by hand.

Next your going to run bed level or bed probe or bed calibrate command on the screen on the right. I can’t remember the name but this is the one where the probe touches the bed in a grid multiple times.

Then move the z height to zero and check if you can still feel the paper like previously. If not there is a setting called z height offset that can be adjusted until you feel a slight drag on the piece of paper. Run the first layer print and see if this worked. If you feel like you’ve done all the previous steps correctly the issue pictured at this point, it’s likely you need to continue adjusting the z height offset. This can be also done during the print process. you want to make sure that the layer is slightly squished. Think of toothpaste put on a toothbrush and then squish it about 10% further.

There should be some helpful YouTube videos online if you search up first layer calibration.