When I was young I always dreamed about my own home theater. You wouldn't believe, but I made my dream come true. I bought my own theater on ebay with a really big discount (about 50%, can you believe that) , so it worth me nothing. There are a lot home theaters on ebay, from the smallest and cheapest to the biggest and most expensive. I leave the link for you, so you can find the theater which suits you the most :))
https://www.ebay.com/e/_electronics/certified-refurbished-home-entertainment?mkcid=1&mkrid=711-53200-19255-0&siteid=0&campid=5338818443&toolid=20014&customid=&mkevt=1