Making payments has been difficult on Aliexpress since CBN restricts the use of naira debit cards for international payments. However, these are ways you can use to pay on Aliexpress:

How To Pay On Aliexpress With a debit card

Open a domiciliary account:  Go to the bank of your choice and request the creation of a domiciliary account. Make sure you request a dollar debit card. This is what you will need to make a payment.

Use of virtual dollar card: There are many virtual dollar cards you can use. See this article for the best virtual dollar cards you can use for shopping online in Nigeria.

How To Pay On Aliexpress Without debit Card

Western Union: In this case, you have to send payment using western union.

Use of third service: This is known as "pay for me service". This is how it works, you order what you to buy, then you will transfer an equivalent amount plus a service charge in naira. They will help you pay for it in dollars.

You can also check out this elaborate article about How to Pay on AliExpress From Nigeria in 2023

Nice writeup

What's their rates?