Ann: Funds Under Management and Performance Fee Update - Dec 2022, page-106

here are the advantages

size - as a retail investor you can enter and exit stock without affecting price, you can easily bang an extra 5-10%, when fund manager gets in and out of stock, they can move stocks by 5-10% due to their size, they got to buy and sell a lot of it

no rules - fund managers have mandates they have to follow certain criteria, they can't invest in certain stocks or business
retails investors you free to invest in anything you like, you invest in good small cap stock, you can get 20-100 times return fund manager can't do
you sell the suckers to fund managers when you got your 100 baggers and the stock becomes big

nimble - you can jump in and out at will, I can buy today sell tomorrow, or market crashed today I can just jump in a buy and I don't like it tomorrow I can get the hell out

and plenty more you just need to know yourself and have good risk management in place before you can use these unfair advantages to the max