Rockstar announced that Cfx.re, the team behind FiveM and RedM, joined Rockstar Games on 11 August 2023. Describing Rockstar as simply opposed to all modding ignores that official announcement.
Setup and checks
For your server, separate three questions: what the platform currently permits, whether you can use the particular resource, and whether the package works with your installation. Keep the creator’s source, applicable terms and tested version with your resource inventory. A community upload or an old video cannot answer all three questions.