Travel experts!!❤

Hey ladies and possibly gents, I am looking for some recommendations. I am currently looking to book a flight between Nov-Dec. I am aware that tickets are sky rocketed around that time because of the holidays. But I know there are a lot of people who travel often and have little tips and tricks or know travel agencies that have good deals. If you have any recommendations Id love to hear them! Im also very nervous because ill be going alone on about a 20+ hour flight out of the country. So I'm sooo scared im going to do something stupid or make a mistake and miss my flight or not know where to go smh😥😥😥 Ive actually had dreams of me missing my flight, or losing my baggage. Ive never even been inside an airport. In a complete amateur😂😂 HELP. Ps..it doesnt help that I've been watching "Bad trips around abroud" on Netflix...