How do I ask for a lower fee?

Hello there, I'm curious about something related to fees in the cryptocurrency and finance world. I've noticed that sometimes transactions come with fees that can be quite high, and I'm wondering if there's a way to request a lower fee. Could you elaborate on the process of asking for a reduced fee, or any strategies that might help me save on costs? I'm particularly interested in understanding if there are any factors that can influence the success of such a request. Thank you in advance for your insights!