Petg transparent fail

After many successful prints in PLA (Basic, silk and matte) I cleant the bed with detergent and tried transparent PETG for the first time, trying to print a benchy.

It failed horribly. Tried two times and both times it seems to got loose. Profile used was a optimized petg benchy on makersworld. Bit suprised, I thought petg would stick more to the bed.

Any tips for a beginne?