Help me setup Sunlight (remote desktop) on Fedora 40

Hello I’m a total Linux noob. As in I downloaded Fedora 40 (Nobara) and I can use it to game, do office work, Discord, etc. but some pieces of software i.e. Sunshine (remote desktop) are pretty tough to unterstand. Can anybody pls help me? I downloaded it from flathub but I can’t make it work…