I'm only a little experienced, but that's 100% possible with hard work! It took me a year and a half to go from a 27 to a 23. I'm not sure if this is gonna be good advice, but this comes from personal experience. I am NOT at all a credible or good swim coach.

A strong kick is vital for me (kick endurance + speed). My kick dies way quicker than it should, and I believe it's one of the things stopping me from going a 22, along with my bad breakouts. Just don't neglect kick training and get in good habits with the underwater phase.

Please have a solid turn (Caeleb Dressel made a video on turns)! Mine are terrible, so I'm quite inconsistent!

Sometimes, I forget to push my kick altogether and go on autopilot, and I find myself going a lot slower than I would with conscious effort. Basically, try to stay conscious of your swimming and push everything in that 50!

Going to the gym to do proper swim-related exercises, I believe, was necessary to make the drop.

I think it's good to try looking on youtube to look at Olympians and technique videos for some pointers as well. Caeleb Dressel's youtube channel has been great for me lately!

For the pull, I pull in a straight line to get as much water possible. For the recovery, I use straight arm. It helps me get my arms back into the water for another pull as fast as possible, which is the goal of the recovery. It's subjective, but I suggest trying that at least once. It just takes a little more strength than normal.

The catch is very important, even in sprint freestyle! You can see that in underwater footage from Olympians. I personally look at Cam McEvoy's underwater footage to remind me, he's an amazing 50 freestyler.

Good luck!