I used the snowball method, and it worked well. The small dopamine hit from paying off even a little was enough to encourage me to keep going.
I transferred to a 0% interest card, which helped a lot. But as mentioned, you need to be sure you won’t be tempted to use it.
I sold things on Vinted, and whenever I had £10 in my balance, I put it straight toward the credit card. That helped me clear clutter from my house and pay off debt.