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

"When visiting Szeged, it's important to respect the local customs and traditions to avoid any cultural faux pas. Firstly, Hungarians are generally formal and reserved, so avoid being overly familiar or loud in public places. When meeting someone for the first time, a firm handshake is the norm. However, close friends and family often greet each other with a kiss on both cheeks. Hungarians are proud of their language, which is unique and difficult to learn. Try to learn a few basic phrases, but avoid making fun of the language or comparing it to others. In Hungary, it's customary to bring a gift when invited to someone's home. However, avoid giving even numbers of flowers as they are considered bad luck and are usually brought to funerals. Hungarians are also very proud of their history and culture, so avoid making negative comments or jokes about the country's past or its national symbols. When dining, it's considered rude to start eating before everyone has been served. Also, keep your hands on the table (but not your elbows), and your napkin on your lap. Finally, tipping is customary in Hungary. In restaurants, it's usual to leave a tip of around 10-15% of the total bill. However, always check the bill first as some places include the service charge. Remember, it's always best to observe and follow the behavior of locals when you're unsure of what to do," mentioned another expat when asked about moving to Szeged, Hungary.