You can do the "dive trick" to encourage pings and up your chances of getting PWPs requested

Google it for a more detailed explanation, but basically you fill your pockets with 100 bells in each slot, sit in the ocean for 5 minutes, get out, walk around and get someone to ping you (usually the first person you walk near) and then repeat if the ping was not a PWP request

You can get one a day. Sometimes it takes me AGES and other times they give me a request pretty fast. Something to try, anyway! If I have time, I try to do it daily. Tip: If no one is pinging you when you walk around, talk to someone. If they tell you you're looking tired, then try to get someone to ping you. They won't come up to you if you're looking pooped