Fit the method to the work.
No framework is best in general. Each suits a different way that work arrives. Start there, not with a favourite.
Scrum
Fixed Sprints
Best for: product work toward planned goals.
Sprints, a sprint goal, clear roles and regular events.
Kanban
Continuous Flow
Best for: support, ops and unpredictable arrivals.
Visual flow, limits on work in progress, pull when ready.
Hybrid
Both, On Purpose
Best for: teams that build and support.
Sprints for planned work, a flow lane for interrupts.
Fit the method to how work arrives.