Arata

So i downloaded this car pack i found on youtube (https://youtu.be/5NOE48JIPAM) and figured that it was messing my lspdfr cars so i deleted it using the steps in the video but after i deleted all the car pack when i hopped on gta5 i can't see any cars roaming around except for trucks (garbage truck, mules, semis) and motorcycles, i followed the steps correctly don't know how it go like that

Im new to modding and i wanted to put custom vehicles in lspdfr, I followed all the steps in a video that i saw, i went and put the police1.yft and stuff in the latest patchday folder (patchday25) ans the xml files in the els folder but when i want to spawn the vehicles using f4 and i type the name the only cars that pops up are the stock cars that rockstar made and i can't seem to find the custom cars that i downloaded. hope someone can help me