I have posted this before but I have had PETG do all kinds of weird things when it is wet so maybe you should try drying it out and seeing if that helps. I have had it string before using the same settings that were fine previously just because it had too much moisture (drying the same spool out made it print fine again).

Have you printed a temp tower? PETG is a pain, i usually just hit it with a heat gun afterwards to get rid of the string.

Try enabling combing mode: https://all3dp.com/2/combing-mode-cura-simply-explained/

Maybe try to reduce nozzle temperature?

First, dry your filament, that is almost certainly the main source of the problem. Second, increase your travel speed by a factor of 5.

If you don’t mind slightly longer print times, activate “Avoid crossing perimeters”. It doesn’t fix the stringing on travel, but it tries to put travel moves inside the model. It generally improves print quality by a huge amount.

Maybe your nozzle is too hot or your filament is wet (although it does not looks wet).

Try set a lower nozzle tempereture and drying your filament.

Also, I suggest to print a temperature tower to see what’s the best fit of this filament with your printer

Controlling for other settings, I find petg strings pretty badly when the filament isn’t dry. I’d really recommend trying dry filament and/or drying yours out. Petg always seems to string a little in my experience, just not to that level