Renault Laguna Grandtour gets hot

Hello, the engine of my Laguna is getting pretty hot… I’ve already tested/maht: – Fan does not start when I crossover works it – Thermo switch replaced ( Fan still doesn’t start – hoses and coolers are getting hot/hot – Cooling system unveiled (Hope I made it right) – fuses checked, all OK I’ve ventilated by opening the balance tank when I’m a warm motor (engine) and then opening the screw on the cooler, k What I still noticed is that when I put the light or the ventilation on warm air comes warm air and the engine gets warmer and warmer (you can look like the needle goes up). When the engine is off and only the ignition is on, the temperature is normal (in the middle), as soon as I start the engine, I can look back at how the needle runs up! I hope you can give me a little bit of time. n help and hope that you don’t tap on the thermostat, because I probably won’t do this alone with my knowledge and I really don’t have any money for the workshop at the moment! Thank you very much already Greetings Reipeo