Man, your stuttering is really fine, it's nothing. I think your voice sounds good, I can't see any problems. Breathing exercise once a day or 2 times a day and reading a book out loud slowly, but just letting it go you know, speech isn't sth you can control it's so much complex system, yeah of course you can gain some success to a certain extent but that's not fluency that's not the freedom. Just try to be more assertive, wait a bit, no rush and speak. Bring emotions, experiment, whatever u want. The breathing exercises and all of that will eventually become automatic, subconscious and u it will be good