Percentage for more aggressive growth; investment vs HYSE

I have more than I need in my emergency fund HYSE because I likely will need a car upgrade in the next few years. I’m realizing it’s probably better to invest it with the ability to divest if necessary.

Right now I have a 403b through work with around 70k and with fidelity I have a personal investment account with a few grand and a ROTH IRA that I just started last year. It only has around 11k and I will max out if I can. I’m invested in several ETFs currently.

I’m behind in my retirement savings after a long term relationship ended (there was some controlling emotional and financial abuse there so I’m overcoming that now) and some legal fees, I’m in my 40s and have a lower paying job so I work extra jobs and that goes toward investments. I wasted years with the money sitting in a low growth savings account and am trying to make up for lost time.

I do not have any debt, which is good, but I don’t own any “good debt” like property.

I have done some research but it can feel
Overwhelming. Is there a better sub for “beginners” or some recommendations for how to best allocate funds?