Air Canada needs to get better

So Air Canada needs to step up and improve ... seriously. Just back from a vacation trip to the west coast, which involved six different Air Canada flights. In every case, every flight was delayed. I also noticed there appears to be a public backlash against people paying to have their luggage checked for a fee. I noticed more and more people are bringing carry-on baggage. While this could be the result of luggage fees, I also suspect it is because so many people are reporting problems with lost luggage. As one might expect, this has caused a lot of congestion when people are boarding the aircraft and trying to stow their bags in the overhead bins. You get to your seat and find the overhead bin is already stuffed with someone else's baggage, which is the same situation in the bins ahead of, and behind, your seat. Very frustrating. If you are one of the last people to get on the plane, or if a person's softside suitcase is too stuffed, you won't get a bin. On two occasions I saw the flight attendent take a persons carry-on bag, saying 'we will have to check this bag'. More frustration. Also, on two occasions -- two of my six flights -- were oversold and the Air Canada desk clerks had to appeal for volunteers to take a later flight, either in the evening or the next day! On one occasion, while flying to Comox I chose not to select a seat in advance. It's a 35 minute flight, why should I pay $19 to pre-select a seat? So the Air Canada desk clerk said I would be the one who would need to give to up a seat, because they oversold the flight. I asked why. She said because I didn't pre-select a seat. Sounds like a scam, I replied. I said I was diabetic and needed to get to my destination in order to get my insulin. I keep track of my bloos-sugar level hourly through an app on my phone. My blood-sugar was rising. She backed down immediately and said I could go on the plane.