Professional singer-songwriter and singing teacher here. My advice: as tempting as it may seem, the ”fame and fortune“ mindset won’t get you far on its own. First and foremost, improve your capabilities and keep working on your craft. Spirits can make amazing things happen, yes, but not without your active involvement and constant dedication. But you have more resources at your disposal than you think. I‘d also recommend studying the people you admire, and try and find out more about their pre-success path. Especially the mindset that might have got them to a next level. More often than not, you will find that they have worked their butts off without being commercially successful for a long time. Think Katy Perry or Lana Del Rey, both have had total failures in terms of commercial careers before, and there are tons of other examples in every era and genre. Also, once you have your ”fame and fortune“, who can guarantee that you will have a long standing career that will sustain you commercially and artistically? There are absolutely no guarantees for that, even after you‘ve had your breakthrough, however you define it.
Another idea would be to investigate what exactly you think that fame and fortune is, what it means to you, and why that is such an important ideal for you.
As for spirits, reach out to one you feel a connection with or attraction to, for whatever reason. Research them and build a rapport any way you can (once a connection is established, communication gradually becomes easier, depending on your openness and dedication). A spirit can show you new ways of thinking and, inevitably, creating or facilitating the results you desire. Again, it really helps to know not only what you want, but why. You absolutely have to put in the work and be ready and willing (!) to learn. With our without magic.
In conclusion, I‘d suggest the very practical approach in combination with magic, however and with whomever suits you best.