As others have mentioned, a felony conviction is a lifetime bar to firearms ownership unless you can get it expunged or pardoned.
This is a serious matter, with life-altering consequences if you follow the wrong advice. I cannot express the need for you to get guidance from a competent lawyer enough. Despite a wealth of legal experience and knowledge on this forum, we can't offer legal advice.
In the depth of winter I finally learned that there was in me an invincible summer.