What cultural faux pas should I try to avoid making in Leipzig?

"In Leipzig, punctuality is highly valued, so avoid being late for appointments or meetings. It's considered rude to interrupt someone while they're speaking, so wait for your turn to speak. Avoid discussing sensitive topics such as World War II, the Holocaust, or the former East Germany, as these can be uncomfortable for some Germans. It's also considered impolite to chew gum, eat, or drink in public transportation. When dining, keep your hands on the table (but not your elbows), and remember to say "Guten Appetit" before starting to eat. In Germany, it's customary to greet people with a firm handshake, but avoid physical contact such as hugging or kissing unless you're very close with the person. Also, it's important to respect the local culture and traditions. For example, in Leipzig, it's common to celebrate Bachfest, a music festival dedicated to the composer Johann Sebastian Bach, who lived and worked in the city. Participating in or appreciating these traditions can show respect for the local culture. Lastly, Germans value their privacy, so avoid asking personal questions unless you know the person well. It's also considered rude to stare or to take photos of people without their permission," remarked another expat in Leipzig, Germany.