First… be more clear what you mean.
If you make music in your bedroom, then you already have “a studio”., so anything you make is already “studio quality”.
Are you trying to get recordings which sound like Beyonce & Hans Zimmer hanging out with Brian Eno & Rick Ruben in Abbey Road? Maybe you want to sound like 80s industrial or goth tracks. You don’t “need” Abbey Road for that.
Personally, I think it’s better to focus on what you have available, can afford to change, and what your music needs to do. Don’t wear yourself out fretting about expensive production techniques that don’t apply to your sound… unless they do actually apply.
Pick two or three directions your music will go, and build a signal path and personal habits which support those aims. Consider renting spaces for things you can’t do. Maybe recording all your band playing together would yield better stems than tracking one by one at home… but mix at home). Etc