I need some tips...

Hi, hello this is my first post to this subreddit! Anyways I need some tips on growing strawberries on a balcony. I been trying for 4 years and even asked my horticulture teacher for advice, besides planting them before the last frost what else should I do? Should I put them in seedling trays? Any advice would be appreciated thanks, I look forward to hearing from this community 💚