Could anyone make out this handwriting?

What does “strike” mean here？

このタイトルはどういう意味ですか？このタイトルの省いた言葉は何ですか？

Can the phrase "for reference only" be used in this case? For example, you provide some information for someone, but you don't know if this information is true. So you want to tell them "I don't know if this information is true. I just write it here for you to consider. If you believe in it and use this information officially and have any serious consequences, then I won't be responsible for that." So, in this case, can the phrase "for reference only" express that meaning?

Condescending Waiter in Starbucks I read a post on social media and it's really infuriating. The poster said she planned to meet her mother in Starbucks but she was so busy at work so she has to let her mother wait for a while in there. Her mother thought she should order something instead of just sitting there. She went to the counter and told the waiter: "Can I have a muffin, please." "A what?" The waiter replied with a annoyed tone. "A muffin." The mother pointed to the muffin, "You see, that little dessert with something like a mushroom on the top." The waiter rolled his eyes and say: "That's not muffin. It's called MYFIFIN (the translated name in Starbucks in China)" And then the waiter asked what kind of flavour does she want. The mother saw there are two flavour and one of them is chocolate and the another one looks like the original flavour, so she answered: "The original one, please." The waiter rolled his eyes again and said impatiently: "There's no original. Only blueberry and chocolate." The mother felt so embarrassed and lost her appetite to eat the muffin. After they went home, the daughter started baking muffin. The mother told the daughter that she'll get laughed if she pronounces like "muffin", and that's when the daughter heard everything happened in Starbucks. The daughter was so angry and planned to report the waiter to the manager. After she posted this thing on the internet, lots of people got infuriated by this condescending and rude waiter. "My mother often told me to be polite to other people when I was a child, but after I'd grown up, I found that not everyone has a mother." "Has this waiter even finished his primary school? How can he not know muffin's correct pronunciation?" "Nowsdays, some employees in service business are so rude and arrogant, especially those who work in luxury shops. They always act like they own all those luxuries in the shop."

“This is an umbrella printed with flowers.” Is this sentence correct if I want to describe a image like this：

I'm always bad at pronunciation and I really want to improve it. Could someone please listen to my recording and tell me how I should improve my pronunciation? Like which sound should I work on because people may have trouble understanding me if I don't. Here's the recording: https://www.youtube.com/watch?v=fXBu5e24LYk

Could I say “drop chips”? For example, when you eat some crisp food like cookie or fried chips, it drops chips, but I am not sure if it is a appropriate expression.

Could I say “I feel the embarrassment was floating in air” If I want to describe a scene that everyone is silent after a awkward thing happened, could I say "I feel the embarrassment is floating in air"? Would it be weird to native speaker?