You might want to take a look at hetzner. I’d consider though that a budget of 120 Euros is probably not sufficient to get you the set up you’d really want to host multiple vps (raid fast disks as opposed to domestic disks, gigabit connect, sufficient bandwidth, etc) unless you own the server hardware and are just paying for colocation.
Oh, understand. What server configuration do you recommend for VPS? Hetzner i reviewed, they are taking setup fee, maybe do know some other better than hetzner?