For me, it would be difficult to leave the decision-making process to an app. But again, it doesn't have all the psychological challenges we have when we invest our money.
I see you say that you've lost a lot of time before you started investing, but sometimes you can have investments that become a success overnight. I've been thinking about a strategy on betting on the wrong horse for a short time. Remember when Musk said that we use Signal? Well, people invested in Signal Advance (the wrong horse), and the stock price skyrocketed overnight. What if we could use that to our advantage?
I wrote a piece on that, maybe it might be useful to you:
https://medium.com/the-innovation/an-unusual-guide-to-get-rich-with-stocks-85cf9f6f8948
And this way, all that lost time in investment can be "regained" in a way.