As for the original issue, if it happens once, there could be a problem.
But there is NO problem, that is the thing here. Am I just clueless after nearly 650 hours played SOLO and with multiple SOLO runs with a Battlemaster (a two-handed version and a dual-wielding version)?
What happened to OP was largely an act of some seriously bad RNG, imho.
Want to minimize such from happening, select Great Weapon Fighting or Two-Weapon Fighting Style (depending upon your build) at level 2. Want to further minimize such from happening, position, use a bless scroll or have a party member through bless, use a STR potion, etc.
And even then, RNG is simply that RNG.
