MODS I RECOMMEND:

HD ROAD TEXTURES BY DKT70: https://libertycity.net/files/gta-4/35472-hd-roads-by-dkt70-final.html

Immersive NY BY JOEMOO: https://www.nexusmods.com/gta4/mods/138?BH=0

HD IV WEAPONS BY lenol03: https://www.gtainside.com/en/gta4/weapons/126557-hd-iv-weapons/

GTA 4 FIGHTER MOD BY GolakMods: https://www.gtainside.com/en/gta4/mods/57193-fighter/

V HANDLING MOD FOR IV 1.3 BY michael/niko: https://www.gtainside.com/en/gta4/mods/54146-gta-v-handling-for-iv-1-3/

mod menus: of your choice

Liberty Legacy Trainer: https://gtaforums.com/topic/973091-libertys-legacy-trainer-gta-iv-ce-12043-above/

zolika's zmenuiv: https://zolika.dev/mods/ivmenu

Improved Vanilla Blood: https://www.gtainside.com/en/gta4/mods/194050-improved-vanilla-blood/