Buyer personas for a marketplace
A marketplace has a problem others do not: it must convince two audiences at once, and each only comes if the other is already there. The seller wants qualified demand and fair commissions; the buyer wants choice, trust and recourse if things go wrong. Your personas must cover BOTH sides — otherwise you are optimising an empty square.
Describe your platform in the pre-filled generator: vertical, commission model, promise. Then generate twice: once supply-oriented (your sellers, using the audience hint), once demand-oriented (your buyers). Objections differ radically: profitability and visibility on the seller side, payment security and quality on the buyer side.