Dissipative solitons are localized wave packets formed through the balance between external driving and loss, as well as between nonlinearity and diffraction. They play an important role in optical frequency comb generation and precision optical field manipulation. For the control of dissipative solitons in cavities, previous studies have mostly focused on systems with locally nonlinear media inside the cavity, while the formation and control mechanisms of cavity solitons under nonlocal nonlinear effects remain insufficiently discussed and explored. In this paper, we systematically investigate the evolution and control of dissipative solitons in a nonlinear optical cavity with a Gaussian nonlocal response, driven by a spatially confined Gaussian pump. The nonlocal response width emerges as an effective tuning parameter that deterministically governs the final soliton number, driving a clear transition from four‑soliton to three‑, two‑, and ultimately single‑soliton structures as the width of nonlocal response increases, accompanied by a monotonic increase in peak power. In parallel, stronger nonlocality suppresses early‑stage transverse splitting, reduces the propagation distance required to reach steady states, and rapidly damps oscillatory behavior in the peak power evolution. From a physical perspective, we demonstrate that cavities with varying nonlocal widths intrinsically support distinct nonlinear eigenmodes, and that the incident Gaussian field gradually evolves into the corresponding eigenmode—thereby establishing the physical mechanism to explain the different final states observed. These features can also be attributed to the fact that the nonlocally induced refractive index potential broadens and smooths into an effective parabolic profile under strongly nonlocal nonlinearity, which suppresses modulational instability and thereby favors the formation of a single soliton. Finally, we further investigate the beam dynamics under bidirectional detuning scans. Forward and backward scans yield different critical detuning values for the transitions between chaotic and soliton states. Bistability occurs under both weak and strong nonlocality, but in different detuning intervals; under strong nonlocality, the two scans also follow distinct evolution routes. Our findings provide a new framework for precision soliton management in nonlocal cavities and may inspire further beam shaping strategies.