Help adding FiveM Ready Addons to NORMAL Singleplayer

Alright so. I have many FiveReborn ready addon-dlc’s and I’ve went and asked so many people and scraped all over the internet, but cant find how to make them to work with R* singleplayer. I know where the data and stream folders go, but all of my SP ready addons have Content.xml and Setup2.xml files, which is all I am missing… Is that why my addons won’t show up ingame? I’m sorry if this post is incoherent, I’m just so tired of all of this.

What year is it?
Also, you just showed that you either paid for a vehicle pack that violates the TOS or are using a leaked version…just an FYI.

I’d also suggest Google as there are hundreds of tutorials.