'Secondo me' — the safe opinion opener
Use 'Secondo me' (according to me) to introduce any opinion — it's natural and common. Avoid starting with 'Penso che' or 'Credo che' — these trigger the congiuntivo (subjunctive mood), a B1-level grammar structure you haven't learned yet, and wrong forms will confuse native speakers. Secondo me + indicative is always correct.
