Don't believe people when they claim to work miracles. You and I are writing in tongues if English is not your native tongue and it is no miracle at all. A miracle would be for me to speak in my native tongue to a multitude of nations and every one of them to understand me as if it were their native tongue. Babbling gibberish is not a superpower.
Some people claim to have the power to heal, but if they deny Jesus as the son of God or charge you money for it - you're better off without their help, might as well go to a hypnotist to convince you you don't have any illness. It won't make you healthy but at least you'll think you are.

Matthew 16:4 "A wicked and adulterous generation seeketh after a sign; and there shall no sign be given unto it, but the sign of the prophet Jonas."

We live in a world plagued with evil on all sides and we cower asking for a miracle. A miracle is to live according to the word of God in a world filled with sin. Jonah was a prophet of God and he tried to disobey God. God didn't let him, he sent a storm to stop him, he prepared a monster to bring him back where he should be and when Jonah was angry God created a gourd vine in a day to bring shade and joy to the depressed prophet and the next day he destroyed it to teach him a lesson. We need to learn and obey God's word and we won't be depressed or angry, we won't be lost in the coming storm or caught up by the beast of the sea. We don't need miracles we only need to love God with all our heart.