pcsx2 games resolution

[insaf5]

I play PS2 games on pcsx2 but the resolution is not good, I have a Radeon RX 590 with  16GB RAM. Processor i7 10700k 3.8ghz 16 cpus. I run Mortal Kombat games like MKDeception and MKArmageddon, and their display is quite good but when I run Resident Evil – Code: Veronica Resident Evil – Code: Veronica Mortal Kombat Shaolin Monks, Resident Evil – Code: Veronica, Onimusha Warlords these games' graphics are not very good, even graphic look averages.
please let me what settings are required to run these games with better graphics.

[Khi]

By graphics, do you mean the native resolution? If yes, then you can increase the resolution with a hardware renderer such as Vulkan (if your PC supports this and you are using a more recent PCSX2 version), Direct3D 11/12 or OpenGL in the emulator settings. However, this can lead to various graphics issues in some games. The safest and most accurate method is the software renderer.