im sure you wont be able to get even close to their success, because you are alone, and you dont have a big publisher behind you, which would pay as you work on a game, which can take years, and you'd have to work also as i assume you also need to eat and live somewhere....
but i also though about this as i was much younger, already dreaming of beeing a level designer... but you would have to look if any bigger company looks for employes, but they are treating it like another job requiring certain skill, maybe also more, like haveing already workin on projects for a year or so, and you need to remind yourself: Success as goal sucks ass and you wont most certainy reach it, but if you do something out of pure passion and maybe then after some time it will eventuallly makke boom or not :D but i reccommed releasing your game on steam rather then on itch only, ive seen multiple devs putting out demos for their steam games on itch with a big "WISHLIST on STEAM" popping directly in your face as you explore the game page, honestly this seems to be a rather good apprach, BUT steam costs 100 per game release and one time 100 dollar for joining steam gamedevs and for ppl outside the us its rather complicated as you need to contact offices to have a certain document dont blame me i forget what it excatly was about also my sur name contains an "Ü" which causes all kiind of trouble, but im assuming putting in "-X-ScornGames" in my case would be okay, i mean if they have my bank connection iban or something the real name wont matter or i need to tell my bank to rename my account or even change my name into "-X-ScornGames", if this is even possible in europe, in the us of course .....