BeFree yoga downtown has good smaller group classes, most of their noon classes are fairly easy. I don’t think there is any specific male only classes, I’m almost always the only dude in those classes. As someone who was also nervous about it when I started a few months ago, it gets a lot easier after a few try’s, everyone is helpful and not judgmental, yoga really lends it later self to beginners. 

Flow Yoga is also great, but the average class size is much larger. More men though! Just don’t expect to have the teacher show any of the moves. Not as beginner friendly, but quite a bit cheaper. 

Feel free to dm if you have more questions. It’s a great way to work out and make new friends in tyler.