If you don't have a budget, look for high-quality open-source alternatives like StrikePractice (which has a free version) or search for "Practice Core" on SpigotMC.
They may not work with the latest versions of Spigot or Paper, leading to frequent server crashes. SOURCE!-Frost_Practice_Core_10.6_CRACKED_BY _DE...
Are you trying to like Boxing or Sumo, or If you don't have a budget, look for
Purchase the plugin from the official developer to receive support and safe updates. If you don't have a budget