1. Know your Audience
2. Know your niche and play to it.
- don't contact big influencers who don't have a specific genre or niche, they either ignore you or their audience is no match for your game
- contact small or medium influencers instead, that mostly play games from the genre/niche that your game is part off
3. make yourself more important in the eyes of the streamers audience by giving Interviews and/or hang out in the streamers chat.
- (for example skye storm (150k YT subs, tripled in 2 years) is mostly playing strategy and building games he was a fan of Foundation and just before release the devs did an interview with him)
4. generally, if your game is in alpha, beta or early access, look for youtubers and twitch streamers, find the biggest voices for your games and interact with the influencers, best method is always to just plop up in the twitch chat while the streamer is playing the game