I think I'm about to take liberties with the term "strategic play." But I'll tell this regardless.
I have a friend who is only hyper competitive when playing games, especially board games. In the moment, he wants to win so badly that he will do anything to win. He manipulates, gaslights, he's dangerously intelligent and he's good at making it seem like he's just playing casually. And then once the game is over? He doesn't care at all whether he won or lost. It's infuriating sometimes.
Thanks to also being an extremely competitive person, I saw through it pretty quickly the first few games I ever played with him. But nobody else does. It seemed like nobody ever tried to win by comparison. So when he and I are in the same game, I know I'm going to lose. And he'll use the other people at the table even if I can see it happening. Even if I made comments about it mid-game, nobody would believe me.
So I got petty. I couldn't beat him at the manipulation game. Instead, I turned him into a meme. When he ever looked like he was behind, and someone noticed, I'd say in a light-hearted conspiratorial way, "[his name] is always ahead." Repeated it whenever he would take the lead and eventually when he won the game. "You see? [His name] is always ahead."
It caught like wildfire. Our other friends started using the catchphrase, even in games where I wasn't there. People started using attack cards on him more often. They'd be less friendly with him about trading. People would snub him even when he was so far behind there was no catching up. The day I realized how much it got to him, was one day he told me how much that phrase impacted his ability to play games with friends. It ruined a lot of his fun. Sometimes new friends who didn't even play with us that often would use it. I didn't realize how much damage it caused. All I wanted was for people to be more wary of his manipulation tactics. But instead I took something fun from a good friend and made it miserable.
So I haven't said it for years since. But our other friends still remember and will say the phrase from time to time. He's always ahead.
I'm not a therapist or any variety of professional on the topic. I will tell you it sounds unhelpful to remove emotions. I know there are similar practices in things like Stoicism. But many people take those practices to extremes. You don't sound like you're doing anything like 100% extreme about emotional suppression but you are probably overdoing it like 80% extreme. If that makes sense.
Emotions are useful. They're informational reactions to the world around us. I'm an extremely emotional person (big happies, big mads, big sads, etc) and sometimes letting that loose is a huge problem. I can make myself physically sick if I don't regulate my emotions and reactions. But I learned and practiced how to feel my emotions and then let them pass, rather than trying to stomp them out entirely. Which never really works. Suppression just pushes the problems to your future self. It's not a relief or release.
So I guess I'm trying to say, you're not at all wrong for what you're trying to accomplish. But I think you're probably not going to succeed or improve (in the way that you want) going about it the way you have been. I'd recommend finding counselors who understand how to teach effective emotional regulation techniques, or practice meditation.