Perhaps you would get responses if you were more specific on your needs.
Access is a powerful tool, but is not an application. Either you, or another party, will need to write programs that utilize this powerful tool. I am doubting that many on LS use Access because the kinds of applications needing database management tools are not widely used.
If your need is financial management software, then you have other choices. But, this apparently is not your need. The phrase, "... help run and manage my business ..." is too vague. Being more specific may generate responses that are useful for you.