The simplest option for you to avoid this kind of scenario in the future is to click "Customize Fee" within your Blockchain.com wallet, and pick a fee yourself based on how full the mempool is, rather than just accepting the fee that Blockchain.com tells you to use. Automated fee algorithms are notoriously inaccurate.
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This seems like a practical solution. Could you please explain a little about mempool charts in the following website?
https://jochen-hoenicke.de/queue/#1,24hAs you said, I have to choose my fees based on mempool statistical data. How can I read the chart? What do the numbers on the vertical column mean?
blob:https://imgur.com/cb1c1600-785f-4f12-8486-db0906d9446f