Most writers truly want to improve their work. A critique can target passive verbs, discover a hole in the plot, weak characterization, or offer a final proof-reading. Effective critique methods depend on individual needs. To some writers every helpful comment turns into a match thrown onto the fire, but nurturing the good not just finding problems can increase flame resistance. Yes, some authors exchange critiques without chopping egos into easily lit tinder or smoldering opposing views into flames of resentment.
Every writer is unique.
Technical advice is fine, but don't impose your writing style on another writer's work. Sometimes writers' instincts are more important than rules You may discover your own writing improves as you critique the work of fellow authors. Be brave and exchange manuscripts with your peers, because it's great to listen and learn from other writers. Use encouragement to temper criticism.