here are my suggestions:

[1] buy simplify3d its software that will give you so much control over printing and can alleviate these issues for sure. They have a two week trial FULL refund if you dont like it... https://www.simplify3d.com/buy-now/

[2] calibrate the machine. use the settings and a plain piece of paper get the nozzle to where you can fit the paper under the nozzle and have some friction when you move it around on the bed. this will help the piece to stick better. i also use glue.

[3] level the machine again

[4] you could buy something called buildtak or printinz for your bed. its a build plate sticker with sticking power!