god no, this is the exact opposite of what happens with p1. you can NOT afford to take losses by mindlessly amoving with p1, it’ll take forever to build up your infantry again.
You can a move against most comps with p1 Raynor. P1 Raynor dominates most ground comp (silly Firebats / marauders hp). But you have to watch out for Protoss reavers / disruptors, banelings and liberators. If you face liberators make some Vikings (like 5) so liberators don’t target down on your bio. Same with enemy science vessels (irradiates).
If you encounter a comp with cloaked units make a third or forth CC for scans.
You can afford losses with p1 Raynor but not at the level of p0 or p2.
Yeah, and what if your army gets wiped? A few well-placed reavers and disruptors will destroy your entire army, and it’ll take minutes to recover. With any other prestige, you don’t have to worry about this, since you can replace your army immediately. P1 raynor is very unforgiving
Something must had gone completely wrong to have you army get wiped in brutal. 400+ HP firebats and 350+ marauders, that’s hard to get wiped, but hey it happens.
Your bios aren’t fighting alone. You have call downs, use them. Duskwings can soften Reavers / disruptors before your bio engage or have your Hyperion remove entire wave of enemies. You can get back your army easily during call downs.
Also you are not restricted to make bio only, playing P1, you can make some banshees with your bios. You press F2 + a for attack then press T for stim, that is still A-move.