<p>The recent discovery of high-temperature superconductivity in high-pressurized La₃Ni₂O_{7−<i>δ</i>} has garnered significant attention. Using density functional theory, we investigate the magnetic properties of La₃Ni₂O_{7−<i>δ</i>} at ambient pressure. Our calculations suggest that with <i>δ</i> = 0, the double spin stripe phase is favored as the magnetic ground state. Oxygen vacancies may effectively turn nearest Ni spins into <i>charge</i> sites. Consequently, with moderate <i>δ</i> values, our theoretical magnetic ground state exhibits characteristics of both double spin stripe and spin-charge stripe configurations, providing a natural explanation to reconcile the seemingly contradictory experimental findings that suggest both the configurations as candidates for the spin-density-wave phase. With higher <i>δ</i> values, we anticipate the ground state to become a spin-glass-like noncollinear magnetic phase with only short-range order. The oxygen vacancies are expected to significantly impact the magnetic excitations and the transition temperatures <i>T</i>_{<i>S</i><i>D</i><i>W</i>}. Notably, the magnetic ordering also induces concomitant charge ordering and orbital ordering, driven by spin-lattice coupling under the low symmetry magnetic order. We further offer a plausible explanation for the experimental observations that the measured <i>T</i>_{<i>S</i><i>D</i><i>W</i>} appears insensitive to the variation of samples and the lack of direct evidence for long-range magnetic ordering.</p>