Heating capacity Lacetti

Hello, I wanted to ask if it’s normal with Lacetti, which he doesn’t really heat? It’s cold outside at the moment, but still I find it very strange, that my Lacetti hardly gets warm. The engine temperature always stays below 90°C. Mostly about the first stroke. I drove about 70km overland this morning. Outside temperature leveled between -11 to -13°C. The thermostat was all the time at the highest level with blower stage 4. Had thick jacket u I felt like it was about 10-12°C in the interior (perhaps even colder, but definitely not warmer). I’ve had several cars and I’ve never had anything like that before. At the temperatures, you almost don’t dare drive longer distances. I have a 1.8 engine with gas system.