Нашёл 36 млн ответов for 'minecraft 1.15.5 with mod'.
http://www.9minecraft.net/tag/minecraft-1-15-2-mods/
http://www.9minecraft.net/tag/minecraft-1-15-2-mods/page/5/
http://www.9minecraft.net/minecraft-forge/
https://www.planetminecraft.com/mods/?op1=49
https://www.planetminecraft.com/mods/functional/?op1=49
https://www.planetminecraft.com/mod/nigelite-additions-mod-1-15-2/
https://TLauncher.org/en/mods-1152_91/all-the-mods-5-1-15-2_10204.html
https://TLauncher.org/en/texture-packs-115_77/
https://www.youtube.com/playlist?list=PLyIp7g7Ne7HdtnAqedT6RZgRYNqt0mG_G
https://www.minecraftforum.net/forums/mapping-and-modding-java-edition/minecraft-mods/2195449-better-pvp-mod-1-16-5-forge-fabric-1-15-2-1-14-4-1