What is the absolute sharpest prime lens I can buy for my Fujifilm X-H2S? I just got this camera last week and honestly I am so excited to use it but I have no idea what I am doing lol. I spent basically all my savings on the body and now I need one really good lens that makes everything look super clear and professional. I read online that prime lenses are better than the ones that zoom in and out but there are so many options and I am totally lost. I am going to my sisters wedding in Tuscany next month and I really want to take some amazing photos that she can print out big so they need to be like... high definition?

My budget is probably around 900 bucks maybe a little more if it is really worth it. I am looking for something that is gonna make the eyes look super sharp and clear because right now everything I take looks a little blurry but maybe thats just me not knowing how to focus it right yet. Sorry if this is a super basic question but the fujifilm website is kinda confusing with all the different numbers like 23mm or 33mm and 56mm and I dont know which one is the sharpest one for this specific camera or if some are too old for the new sensor thingy...