Op and I are from the same country. Since he mentioned land, you should understand his investment amount is more than ten grand. Because you cannot buy land with less than $5K in most areas of my country. No matter where the location is. But if you want to buy land in town sides, you need at least $100K to buy a little-sized land. His father lives in Malaysia and works there. Most of the people worked there for decades. So, I guess his investment fund is more than $10K. Which is why I asked him not to put more than 10% in Bitcoin. After all, it's his father's earned money. If anything goes bad, his father will blame him for rest of the life.
You should always invest only your own money, if you invest other people’s money, it doesn’t matter whether it’s your parents’ money or credit money, then in this case there is a liability and the consequences can be very bad. Imagine if someone loses something that does not belong to them.
Any of the areas that the OP wrote about has its advantages and disadvantages, in any of them you can earn and lose money, because, among other things, the factor of the investor, his knowledge and understanding of the matter is also very important. You can buy one of these assets too expensive, or buy in a bad place and you can forget about profit.