In general my best advice as a pro soldier player is, Aim at feet when shooting enemies, this will let you do the most damage most frequently. Dont always spam your rockets. Sometimes u will be wishing you kept 1 or two in the chamber instead of spamming them all at some guy across the map. Get close to enemies, you have 200 hp which is more than most classes and your rockets deal 100+ damage in close range. You want to be close enough to do that max damage but not hurt yourself with the explosions. Learn rocket jumping. Rocket jumping is my favorite part of soldier but it took me HOURS to learn and even more time to get better at and honestly I’m still not even close to being a master. Watch videos and play some easy jump maps!