there's a bunch of ways. if you're interested in Greek mythology, research the deities and if one stands out to you, try connecting with them. [you could also narrow it down by looking up deities who rule over something you love like owls, winter, or agriculture. you could also look into deities associated with a specific job you do say medicine, building, or even home and family] once you found the deity you wish to work with, try setting up an altar in their name and leaving offerings for them. meditate by it daily, and pray to them. you should receive an answer within the month.
sometimes the deity won't respond or will only stay for a while, accept this and keep on your path. you will find your deity in time. sometimes the deity will reach out to you, so keep an open mind. i found Ember HoneyRaven really helped me on my path and i recommend checking out her video.