My suggestion is that instead of investing in custom fitting clubs right away, you give yourself some time to learn about what you can and can't do with the clubs that you have first.

Along with this thought, I would also suggest that you consider taking some lessons from a teaching professional to help you see the right and wrong way to ensure that you grip the club properly, set up to the ball square to the target and target line, execute your swing with correct sequencing of body motion, weight transfer, and follow-through ---- and as a part of that activity, develop an effective pre-shot routing to help with repeatability.

After you have that an understanding and familiarity with the fundamentals, you will know what to look for in a good fitter because you will have some understanding of what you need, and you will be able to better appreciate what is involved in the fitting process.

Taking lessons at a course, your pro can suggest if all or parts of your bag need replacement.

Likely not necessary to replace all of your bag at one time. You may need to adjust which hybrids and/irons need adjustment. I’d suggest putter last, so you can focus on your natural swing path without being distracted on which wedges or what driver loft will help you. One step at a time.

I am in the same boat. I want new clubs but have no idea what to get.

Any amateur is over their head in determining what to get without professional advisement. There is the added issue for serious women golfers at retail to be steered over to the pastel colored sets and bags “for women”. One size fits all doesn’t work for men and no better for women. It is easy to start with driver, but maybe getting the right mix of hybrids and irons will be a better start.
Lisa and the other women staffers at Titleist can attest, Titleist can fit women with the current offerings. Just not with complete sets of pastel club and bag combinations. Find a Premier center and have them help you assess your biggest needs.
Started golfing as a senior aged golfer, I quickly learned that retailers tended to lead me to the senior sets as a starting point. Fortunately I live close to a Premier site and by accident found Titleist to have what would work, and offered all clubs and lofts in LH. Most companies don’t and that contributed to my loyalty
Enjoy your journey to become the best you.