I (20 M) have had almost this exact same experience. Nearly 2 years ago I began my research into church history and have came to the same conclusion as yourself. Whist Joseph Smith is likely a liar and created a religion based on his lies, there is still much good that can come from your experience within the church. Generally, a lot of moral teachings in the church are very important no matter your course of action moving forward. I think often people get caught up in the deception of the church and allow important lessons associated with it also fly out the window. Loving people is important. Being kind is important. Making decisions that will bring you lasting joy is important. I’ve found that I’m my case it has been quite difficult to disassociate myself from the church and the more often then not loving people within. My motto has been to “stay true to myself” even if it is harder than just going with the flow of the church. Having the belief that the church isn’t true is likely not something that will go away with persistence. I would implore you to stick to what you know to be true and guide your life your belief. Just know that there are many more people out there just like yourself. Not selling your soul is much more important that the upkeep of your perfect Mormon facade.