Hi, Myself Pragya.
I ahve gone through the atatched reference images for the style an designs on interior of Gym. being an interior designer, ic an certainly help you with full design, itnerior modeling and renderin gof the gym with my choice of colors,. furnishings, wall decor, wall design, ceiling design, lighting design etc.
I have been working as professional Architect and Interior designer for last 5 years.
I am quite handy with Autocad, 3D modelling software like Sketch up, Revit, Lumion, 3DS Max and Solidworks.
I provide all sorts of architectural services, e.g. 2D Site plan, 2D CAD floor plans, elevation, sections, 3D modeling of interior and exterior of residential and commercial projects along with realistic rendering and video walk through.
Please check my profile to see my work and reviews from awesome clients that I have worked with.
https://www.freelancer.com/u/pragyajprajapati?w=f
Warm Regards