A few things to keep in mind about transaction pools:
1) There is no single, unified transaction pool across the entire network. Each node maintains its own pool according to its own rules, so the transactions in them may differ.
2) After a transaction is broadcast, it first enters the mempool of each node, where it waits to be selected by a miner or block producer and included in a block.
3) Before sending Bitcoin, check the current fee market and set your fee rate accordingly. If it’s too low, your transaction may be stuck for a long time.
Fees for $BTC are generally quoted in satoshis per virtual byte (sat/vB). The higher the fee rate, the sooner miners are likely to select the transaction.

This information is for reference only; don’t take it as gospel.