Help please, mac os catalina cannot be installed(((

I can't install mac os catalina, maybe there is someone who can help!!!
INTEL Core™ i5 10500
GIGABYTE Z490 UD AC
GIGABYTE Radeon RX 5500 XT 4096Mb OC
SSD 2.5" 250GB Samsung
AeroCool AERO 500 Window (Black)
DDR4 16GB 2666 MHz MICRON
AeroCool 700W