Research the agents who are specifically interested in literary fiction. Tailor your submissions to their preferences. For example, if an agent has a track record of representing authors with experimental writing styles, and that's your strength, make sure to highlight that in your cover letter. Also, consider getting an endorsement from a well - established author in the literary fiction field. A positive word from them can go a long way in getting an agent's attention.
One way is to have a strong online presence. Create a professional website or blog where you can showcase your work, your writing style, and your thoughts on literary fiction. Another important aspect is networking. Attend literary events, workshops, and join writing groups. This way you can meet agents or people who can introduce you to agents. Also, make sure your manuscript is polished. Have other writers or editors read it and give feedback before submitting it to agents.