A refusal feels devastating in the moment, but it is usually a solvable problem, and the worst response is a panicked immediate reapplication. Step one is forensic: read the refusal letter carefully, because the stated grounds dictate everything that follows. Refusals for missing documents or unmet thresholds point toward reapplying once fixed; refusals alleging misrepresentation are far more serious, can carry multi year bans, and warrant professional help immediately.
Step two is knowing your procedural options, which vary by country but generally include administrative review or reconsideration for factual errors, formal appeal to a tribunal where the law allows, and fresh reapplication. Deadlines for reviews and appeals are often short, sometimes weeks, so establish yours the day the refusal arrives, and check what it means for your current status.
Strategically, appeal when the decision was genuinely wrong on the facts or law; reapply when the application was weak, this time addressing every stated ground with new evidence, because an unchanged application invites an unchanged result.