i know this is probably one of if not your first mappacks, but even then this is extremely shallow and barebones. all of the stages are hallways, cramped and flat with only bends and enemies to break up the pace. there's no gameplay, let alone engaging platforming, to speak of. you would very much benefit from taking inspiration from other existing maps that make an attempt to implement platforming challenges (like vanilla or MRCE) to apply to your own work.
otherwise there really isn't much to say, unfortunately. i hope in future you'll make something better.