Countering early game UNSC as UNSC in 1v1?

Often when I’m matched against a higher skill player that has a UNSC leader (usually Kinsano or Cutter), marines and hellbringers are pumped out en masse. Sometimes snipers are thrown into the mix. I play a lot of Cutter, and I do this too depending on what leader I’m up against. If I scout and see this I feel like I have two options. I can do the same thing and hope I get some sort of an advantage in a head on battle or go straight to their base to prevent an attack on mine. Or I can prepare for a rush on my main base and build turrets with anti-infantry, turtle, and hope I can out-tech my opponent to get better units.

I’d prefer to avoid a head on battle as I’m usually behind in army composition after scouting this. I constantly pump marines from the main base and mini expo as I tech up, but this will be beaten by someone who has marines with hellbringers and snipers. I avoid building units that require energy unless I’m going for a rush.

If I decide to turtle and build turrets, I have to use valuable resources to build the turrets and upgrade them. And when I do this, I think a good player will scout this out first and not attack. They will instead go for map control by capturing nodes and expanding. I can’t do anything because I built turrets instead of an effectively sized army. I’m now behind in army size, resource income, and I can’t expand because a good player will just harass and contain with his now large force of marines and hellbringers. I eventually get outpaced and isolated.

My question is: how do I effectively counter someone who masses marines and hellbringers while also setting myself up for the mid and late game strategies? Do the same from the start instead of as a reaction? Do I just need to git gud?

If he goes hellbringers and marines a full JR attack will counter this. If you scout your opponent doing this lock your bases and don’t let him see your first JR scout with any upgrades. This way he will be more likely to commit to the attack since you don’t have any turrets. Once you kill his army JRs can take back map control very fast. He will also be very unlikely to have any turrets at his main.