If I am not mistakenly somewhere last week I caught it up within around 0-2 sat/vbyte, so far is been long I performed transactions within that price level and it confirmed without any delay unlike other days where you initiates a transaction and it spent time.. upto 30-1 hour before confirmation.
Although, it's good seeing that transactions are very much cheaper than before. This one really sweet me for belle, bicus other days e go be like say you wan carry better money take perform transactions and e dey pain well if you convert the money to our currency.
Which wallet are you using? I have not seen 0 sat/vbyte before when making transaction, it starts from 1 sat/vbyte.
I used Electrum wallet to perform my transaction and I can adjust my fee after confirming from mempool.space, and current the highest fee rate is 1 sat/vbyte. I guess you are using trustwallet that is why you don't know about whether fee is adjustable or not.
You can download Electrum wallet from their official site, create address and start using their wallets to make transactions you can perform transactions with the least of 0-1 sat/vbyte.
That's true, the fee is adjustable on electrum and that is provided you're making use of a desktop to perform this, whereby it provides you the privilege of inserting the amount you wanted to be charged as fee, than the one it suggest and bring to you, though it may not be zero completely in this regards, but some like this for instance 0.5, 0.6 or even 0.3 sat/kbyte respectively.