Civil engineers HELP ME

Hi So I am a civil engineer graduate from a private college 2017-21. I dnt have much experience in this field. Only worked for some time. So wnat to ask of any one here know about how to get into project management , estimation , renewable energy projects? These are the topics I really want to work on. Basically I have no idea. Was a stupid for not believing myself and let fear hold me back. I decided not to do that anymore. Any advice is welcome and it would be helpful more than you can imagine.