How do people start gyming?

it feels so intimidating to go to the gym even standing outside looking in tension felt so high. I am quite overweight now based on the BMI but I wan to get fit as time passes but it's so scary to go alone. I felt awkward and unsure of what to do at the gym how to operate the equipment etc. The most I have done before is try to lift a dumbbell and even that takes technique and proper position.

I don't have a budget for a personal trainer because I'm not working now. I'm currently just doing some light run and plank/pushup at home.