If that's no problem for you, just buy/build a worldwide terabit network with hundreds of datacenters around the globe like OVH, Google or Cloudflare for yourself and you should be fine
OVH GAME is a pretty good Anti-DDoS solution for the price they offer. I don't know any comparable DDoS protection out there for under 100 € per month (or even less than 3 € per month for OVH GAME VPS from resellers). If you know one, please let me know.
You said you have a VPS with OVH GAME. At which reseller? (OVH doesn't offer VPS with OVH GAME.)
Notice to everybody browsing this thread.
If you are going to reply with OVH Game Reseller name, give us a reason why to use it, pros and cons with solid proof or at least one experience with that hoster.