How can I gently help someone who left Islam to come back?

As-salamu alaykum. I'm currently abroad and met someone who used to be Muslim but seems a bit lost now. I think he lacked proper Islamic knowledge or followed wrong teachings, so he has some misunderstandings about Islam - he says many Muslims lie, prefers Christians, and thinks the main thing is just doing good rather than following a religion because religions contain lies and control people. He still believes in Allah/God though. This person is really kind and I want to meet him one last time before I return home to try to help. There's a language barrier; his Arabic and English aren't strong, and he's Kurdish, so explaining things properly can be hard. I'm aware we can't force guidance on someone, but I'd like to gently share clear, simple points about tawheed, the mercy and wisdom of Islam, and correct common misconceptions. I also plan to make du'a for him and ask others to pray. Any practical advice on how to speak with him in a respectful, non-confrontational way - maybe which topics to focus on, simple resources in Kurdish or easy Arabic, or how to keep the conversation warm and not pushy - would be really appreciated. Jazakum Allah khair.