Bitcoin transactions fee increasing For instance take a look at this transaction: 

Transaction Size : 1700 bytes

Fee: 133 Sat/Byte

Total: 0.00226898 ~ $33

Outputs: 11

Inputs: 2

Transaction Link

what may cause confirming delay, and is sending with higher fee's helps us avoid issues like this? if so, Bitcoin transactions are so expensive , No?
You can check this site for average Bitcoin transaction fees
https://bitcoinfees.earn.com  

133 Sat/Byte is below the average, therefore not favored by most miners.
In times like this where the network is congested with over 200000 uncomfirmed transactions, higher fees have higher probabilty of getting through first.  

A block can hold at maximum 1MB / 192 bytes = about 5200 transactions, but in reality the average is less than half that number, and a block takes on average 10 minutes to solve.
Right now there are more incoming transactions per 10 minutes, than what the miners are capable of solving, hence low fees != prioritized .