Reddit reviews B-Galaxy Screen Protector-16

My favorite:

https://www.amazon.de/dp/B07XRW718Y/ref=cm_sw_em_r_mt_dp_U_MAaZDbJ2E4MHM

The Spigen standard version: (messed up, it wasn't the nano liquid)

https://www.amazon.de/dp/B07GX33WVR/ref=cm_sw_em_r_mt_dp_U_eCaZDbKDCCACT

This one could be used, but you can expect that you will have to buy a bit more than the above ones:

https://www.amazon.de/dp/B07894L7YR/ref=cm_sw_em_r_mt_dp_U_IDaZDbTA1RMCT

This one is decent but feels less smooth while playing games:

https://www.amazon.de/dp/B07WRC2GLY/ref=cm_sw_em_r_mt_dp_U_NHaZDbGYVRPJN

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Also if your main concern is scratching.. maybe try skinomi?