Came across this tool on HackerNews last week and gave it a try and thought it was a really comprehensive (in my experience) tool for doing long term financial planning yourself.
It costs money, but you can even self host it for a certain price tier.
It’s pretty slick looking. Unfortunately, looks like no option to link to accounts for auto-import of transactions.
I did the whole manual accounting of finances thing for a while, got absolutely sick of it, and now Intuit has all my data because Mint may be trash but it’s trash that does the work for me.