This might not be the most healthiest thing to do as a believer, because the Bible does say to not forsake the assembling of ourselves together, as the manner of some is (Heb. 10:25). And, even at the time of that writing, there were false brethren, false teachers and probably false groups. Some people might be wrong, but not false. What I mean is there are churches and individuals who are genuinely wrong, and how do we know them? They accept corrections, like Apollos. The false ones? Not so much. They know what they're doing. They don't care about the word of God or keeping God's commandments or pleasing God.
Yes, there are false churches, more than we can count. However, every church in this world can't be erroneous, you just have to prayerfully, and with the leading of the Spirit, find the right one for you.
Do you remember that story in the Bible where Elijah said to God that he's the only one remaining and God replied and said he has a remnant, 7,000 who has not bowed their knees to Baal (paraphrased) 1kings 19:14, 18. So I'm sure God still has a remnant, even today.