I would advice this one:
https://www.amazon.com/EPAX-nFEP-Resin-Printer-295x210mm/dp/B08PQ4SCT3/
Is not available on amazon.de but they send it worldwide. nFEP works better for me on my Mono X than regular FEP.
EPAX E10 X10 nFEP Film for 10.1" 3D Resin Printer, Size 295x210mm, One Film https://www.amazon.com/dp/B08PQ4SCT3/ref=cm_sw_r_apan_glt_fabc_NTJDBVTXN4CKWT3H877V?_encoding=UTF8&psc=1