1 Timothy 4:1 “the Spirit clearly says that in the latter times some will abandon the Faith and follow deceiving spirits and doctrines of demons”
if you sincerely are searching for the Body of Christ on earth, The Church, you must consider 1 Timothy and Matthew 16. these Scriptures teach the True Church has been here for 2,000 years and the gates of hell will not prevail against it. if the Church you are looking at has not been here for 2,000 years, it is not the Church of Christ and if you truly loved the Lord, you wouldn’t be part of rebellion against His Church.
also, i would recommend prayerfully reading John 17 and 1 Corinthians 1 and ask the Holy Spirit to enlighten you.
finally, ask yourself why you don’t read about anyone in the NT being faced with this question of what “church” to join. why is that? obviously, there was only One Holy Catholic and Apostolic Church then and that Church by the grace of God and protection of the Holy Spirit, is still here 2,000 years later.
Funny, to have disdained Jehovah’s Witnesses so, you’re certainly coming across like one, or so it would seem to me.