So you will find various different budget Pc Part lists dotted around but you could suggest a budget if you wanted to

AMD Ryzen 7 3700X
MSI MAG B550 tomahawk
NZXT Kraken x53
Trident Z Royal (16 x 2) (3600)
Crucial P1 500Gb M.2 Nvme SSD
SeaGate BarraCuda Compute 2 TB 2.5’’ SSD
MSI Gaming X Trio RTX 3080
NZXT H510
NZXT C 750W 80+ Gold Full Modular
(Can Get any accessories including custom cables RGB strips or More Fans)