Training maps can definitely help in honing your skills in Counter-Strike 2. I've personally used them to improve my aim, reflexes, and map knowledge. Aim training maps like Aim Botz and training_aim_csgo can be particularly beneficial for improving your accuracy and reaction time. As for modern Counter-Strike 2, I find that exploring different skins can add a fresh layer of excitement to the game. If you're interested in trading and making money through skins, I'd recommend keeping an eye out for discounts and bonuses. I recently stumbled upon an article
From the link titled "How To Make Money On CS2" which might offer some valuable insights for you.