Well, hats off to you for having the determination to complete a full 4 movement work, and the courage to post it here for comment and feedback. It’s too bad that the first commenter felt free to snipe at your effort without even listening to it; that’s not typically a way to earn respect for one’s opinions.
I did listen to your entire symphony. That said, I’m not going to listen a second time. It’s clearly a beginner’s effort and a learning exercise. My advice would be to call it done (I agree with your decision not to make changes), set it aside, and begin to work with smaller forms to develop your skills. Here are some things I’d suggest you work on:
1. How to craft a melodic line. With a couple of exceptions, your melodies are just little patterns that don’t go anywhere. If your intent is to write in the classical-romantic tradition, you need to figure out what makes a melody and what makes a developable theme.
2. Types of polyphony other than melody-and-accompaniment. The vast majority of your symphony consists of little melodic-like-patterns against a block-chord accompaniment. This just gets tiresome.
3. How to develop a musical idea. A symphonic movement is long because it takes that long for the material to be developed and for the composer to say what needs to be said. Your symphony has, to my ear, about 8 minutes of content stretched out to 47 minutes by repetition. Repetition is NOT development.
4. An awareness of what real instruments, played by real humans, can and can’t do. Your second movement scherzo has some potential, but your tuba player has died of hypoxia before it’s half done. The rest of your brass section expires in the finale. You don’t gain credibility by being that conspicuously unaware.
I don’t want to pile on any more or be discouraging. I also once tried to write a symphony, long before I knew what I was doing. I finished the opening movement and a little bit of a scherzo. The experience taught me that I had a lot to learn about symphonies, but that it was learnable. It’s possible that I know what I’m doing now, but I actually don’t think I’ll ever write one, mainly because the expectations of audiences have changed so much.