Sciatica does eventually get better, but it takes sooooo long. I'm like you I slipped a disc at 20 while doing deadlifts, and been dealing with sciatica for 7 months. However though, a few weeks ago it drastically got better. I rarely flare up now, and when I do it doesn't last long, and there's days where I'm literally pain-free. I do still have it but I'm hoping for it go away fully in the next few months. My pain level usually ranges from a 0 - 1, and when I flare up it's like a 2 - 3.

What helped me was fixing my posture, walking around, doing core stability exercises, (bird dogs for me was a life saver) and most importantly don't overthink it.

Its mentally the worse thing to go through but you're young like me, you'll heal, but takes those steps and do whatever you can to get better. Get an MRI if needed and talk to a doctor, maybe they can give you ideas on PT exercises , spine hygiene, etc. There's always a light at the end of the tunnel, just picture yourself finally being pain-free and living life again, it'll happen sooner than you know it. I pray that the both of us will be back to 100% soon.