A lot of people here talk about putting your money in an index, the idea being it’ll do better than the average persons stock picks.
Owning a home is a good one, as long as you can afford the repayments and budget for times you might be out of work.
In most countries there is a big tax advantage. Some offer income tax relief, and most will be tax free gains, plus once you pay the mortgage off your savings (vs. renting) are on post tax income. Or in other words if you rent you’d need to make enough income from another asset such that after tax it would pay your rent.
Knowledge is also good. I’m learning SEO and marketing online at the moment, and that creates redundancy in that if I lose all my money I still have those skills to start again. The lottery winner with no skills doesn’t have that safety net.
There are some conservative ideas for you. There are a lot of more risky options too that involve predicting the future. Picking stocks, crypto currencies, angel investing and suchlike. Those can be good, and outliers get rich, but do it with money you can afford to lose.