dilettante
🇺🇸
/ˌdɪləˈtænti/
🇬🇧
/ˌdɪləˈtænti/
Not serious about a study or job and lacking deep knowledge in it.
He approached the guitar lessons in a dilettante way, more for fun than for learning.
Someone who does an activity or studies a subject without serious intentions and without deep knowledge.
She's a dilettante in painting, only doing it on weekends for her own amusement.