so i finally saved up enough to get the fujifilm x-s20 and i am seriously so excited to start my travel vlog but i think i messed up already lol. i bought the kit with the 18-55mm lens because everyone said it was great but when i try to film myself holding the camera at arms length my head is just way too big in the frame and you cant even see the scenery behind me. i'm going on a trip to japan in like three weeks and really need to figure this out fast but i have no idea what all these lens numbers mean or what wide angle actually looks like in real life.

sorry if this is a dumb question but is there a cheaper lens i can get that will show more of the background while i'm talking? i'm a total beginner and all the tech talk about apertures and focal lengths is just super confusing to me right now. my budget is pretty tight since the camera was so expensive so i'm hoping to find something for maybe $350 or less if that's even possible. i saw some stuff about a 12mm lens or maybe a 10-24mm but those seem really expensive new. are there any third party brands like viltrox or sigma that are good for vlogging and actually have autofocus so it stays on my face while i'm walking? i really dont want to spend a fortune but i want my videos to look decent...