This thread may not be directed to you, so grains of salt are recommended.
Gear is nice. Having the right bit of kit for the right project is of supreme importance - whether it's a mic, a guitar, or a cymbal.
Having a well-treated room is important, too. A well-treated room is going to sound more open and balanced than an untreated one. Money spent on room treatment is generally money well-spent.
Now for the rub: If you have a tin ear, none of this is going to help you turn around a decent product.
If you don't have an ear for pitch, and your instruments are out of tune with themselves and other instruments, your recordings will suffer.
If you are a "producer", and don't have a knack for arrangement, or understand how to incorporate space and silence into an piece, your client's recordings will suffer.
If you are a musician in a band, and you lack the ability to transpose chords, use different inversions, or envision and arrange your parts as pieces of an ensemble, your recordings will suffer.
Before you spend a fortune on things that will expose and highlight deficiencies in your technique and approach, work on identifying deficiencies in your technique and approach. That is, put the horse in front of the cart.
With all of that said, you are in the right place to learn, and the world is full of internet know-it-alls just like me.
Jump in and make it happen.