Hi, i have great experience in createing the models with a high details in 3ds max and zbrush and texturing it with Substance painter and Mari , then convert it to low poly by retopology it to the maximum allowed number of vertex or polygons and make a correct uv map then baking maps (AO , Normals bump , diffuse , specular/roughness , etc ) from High poly to Low poly model and prepare a package for the model , and give you a high quality work
please chat me so i can show you some of my previous work in Game Design
Cheers !