There are many options, drop shipping, affiliate marketing, CPA marketing and as you know this requires traffic, targeted traffic which is quite expensive to buy these days since everyone is doing it. Best traffic sources: facebook ads, google adwords, bing ads etc.
Now the risk of losing your capital is everywhere, and in my opinion, you should invest your cash in building a following, a community then milking it years to come with less work, yes I’m talking about a Youtube channel. As you can guess I’m the type of guy that thinks long term because you can blow this 2000 euros on ads and earn ZERO, is possible, you could set up some campaigns and have success but the risk is still there and you know it.
I highly recommend taking a deep think on what niche do you think you could approach on Youtube, create that channel and start creating videos every single day, and of course the 2000 euro budget spend it on hardware and software if you need and remaining on promoting your channel, and here I’m thinking about contacting Youtubers from your niche and ask them for a video partnership, so that you get subscribers faster. Don’t go and ask partnership from a Youtuber with 1,000,000 subs, start with those that have 50,000+ subs and gets decent views each video they post, they are cheaper and the approach is faster.
Let me know if you have any questions, I’m here to help.