ELI5: Leveraged ETFs for the long term?

So I am getting started with investing relatively late after using most of my 20's pursuing a graduate degree and making little money. Now I am trying to catch up on retirement savings. I'm very fortunate to have a great emotional and financial support network, so my risk tolerance is very high (or so I think). Currently, my retirement savings in a taxable account is 100% equities with about 80/20 US vs international split. Does it make sense to add some leveraged ETFs (such as TQQQ or SSO) in order to help make up for lost investing time and try to compound gains quicker. I have been cautioned that the losses are also compounded, but over a 30+ year time horizon, wouldn't the leverage most likely net me positive returns?