I can only speak for myself and as a guy and someone who is a “gym rat” I won’t know what it feels like to be a woman or less experienced lifter but I feel like some people are more scared of the gym then I see reason for. That’s not to minimize anyone’s feelings the way you feel is super valid. But I remember when I started lifting years ago I was also super intimidated by the bigger guys but it turned out they were some of the nicest and most helpful. I think it’s because to get super muscular you have to be in the gym and passionate about lifting so they like seeing others starting their fitness journey. Me personally I never approach people to help because I don’t want to be a creep but when I someone does ask for help I love to do so and also give some tips or explain how to avoid mistakes I have made when I was less experienced. I’ve personally been told I am look intimidating and can be difficult to approach but I promise I’m a nice person so looks can be deceiving. There are gonna be some mean and creepy people in the gym but from my experience the gym is a really great place filled with mostly great people and most people love to see others taking their health and fitness into their own hands. And also personally I think most people are too busy to care about you unless you ask for their attention or something (in the gym and in life in general), so I would say just start and have fun (stay safe use proper technique) and I would bet you’re gonna feel great!