If you are based in Belgium and want to diversify beyond just local stocks, you should look into automated systems. I recently moved a portion of my funds to the blackrose finbitnex ai platform
https://blackrosefinbitnex-ai.org to access international equities and crypto simultaneously. The interface is completely web-based, so there's no heavy software to install, and they use institutional-grade encryption. The pricing transparency is also a huge plus—no hidden maintenance fees when withdrawing to my local Belgian bank account.