Miners are playing "switch" games by switching their hashrates to other coins that are coming daily through forks, and waiting for more amount of transactions being stuck in the mempool to make it crowded and spam it hard. I guess miners are themselves supporting all those "bullshit" concepts and are trying to make Bitcoins look bad in the eyes of investors. This is the major reason why even high-fee transactions are not getting confirmed.
Like others, I would ask the same. How much was your fee and how much sats/byte did you send?
I have been seeing some ridiculous spikes in terms of fee/byte, and the worst was >2500 sats/byte.
This is how those big whales are able to get their transactions taken into the "limited" blocks that are being mined (due to mining power divided in other coins).
if your sent coins do not get confirmed,they will get cancelled and return to their owners wallet
Who said that?
No one can undo any transactions.
We just can double spend it with high fee and the higher fee's transaction will get confirmations sooner than other transaction. Otherwise the transaction will remain in limbo until gets confirmations.
It does get reverted "in few cases" where if the transaction 'with a proper fee' doesn't get accepted, it gets back to the same wallet it was sent through (except in cases of Exchanges).