Answer
No. A residence permit cannot be guaranteed without the possibility of refusal. The decision depends on the applicant’s category, documents and circumstances; successful cases do not replace checking the requirements or guarantee the same outcome for another person.
The competent authority—not an intermediary, lawyer or consultant—makes the decision. A professional may be responsible for the scope of their work, preparing documents and support, but not for the grant of status regardless of the underlying circumstances.
Be especially cautious about promises of guaranteed approval, a “secret programme”, a fictitious address or income, or a passport without residence. A sound plan sets out stages, documents, timeframes and risks of delay; it does not sell a guarantee.