I purchased an iPhone second hand and Apple id was stuck

If the phone says it is activation locked only the person who enabled this theft-deterrent feature can unlock it. If you cannot contact that person return the phone for a refund. And see→The All Too Common SAD Reality of Buying a Used iPad/iPhone

If you have a second hand phone that still has the prior owners Apple ID on it, you will never be able to use this phone until that person removes their account. You need to return it for a refund if possible.