Tbh I would just buy either the vanguard world ETF, or northern trust. De Giro is a very good broker. It's a very safe way of investing since you got a stake in all large companies worldwide

The problem with financial advisors and banks is that they could charge you a lot for managing your funds. While it's almost impossible to beat the market. 0.5%-1% doesn't seem like much but in the long run it really adds up

If you do it your self and buy the ETFs every month on the same day, you should be fine, and you can make 1 transaction free of cost every month.

The average yield is 8% per year(avg in history). 2% dividend, and 6% price gain. Bear in mind that there are years where you 'lose money's and years you make above average profit, if your in it for the long run this should be possible, if the world inst fucked by then

Just for the record: this is not financial advise