I walked in the Christian path, as you described, for 30 something years. Then, I found something better!
Since I've had prayer after prayer answered, including very amazing ones that seem impossible, I know what Christ said actually works fully. He said even a small amount of faith can do amazing things, and I have confirmation of that, and repeated, and even without any exceptions.
It's like this -- Suppose over 10 years a person bought about 40 lottery tickets.
If they won money on every lottery ticket they bought, $5 here, $100 there, $10,000 on another, and even $500,000 on one and $100,000 on another, and each and every ticket they bought paid, then.....logically, we can see that something is happening that isn't just my guess or just an imagination.
When I am getting to 10 out of 10, and later 25 out of 25, I'm starting to see something I know is real. Like the sun -- it is reliable. It's become a confirmed thing. That's where I am now. He is real, and everything He said works just as He said it. -->But! it can help to know that only some Christians or their churches have learned much of the detailed and precise things He said. (They end up with a version unlike His actual instructions)
So, it's very common that a person thinks they've tried "Christian" but it was some other thing than what He said in His teachings. He's the Real Thing. Christian is real faith and doing the precise things He said, at least for me, and those really do work.
Not at all like some (many in a large nation) churches do. Like so many, I had to leave church (in my case far, far behind) in order to find God. Now, I've found a church much more aligned with precise things Christ said, but still the real finding of God is individual and personal and this church itself won't necessarily make anyone find God, nor will the other 5 types I've been in.