Upgrade your shower drain. Keep water flowing freely into your drains. Stop hair and other things clogging up your drains. Just keep the filters free from muck and then will make you happy. 1.5mm thick stainless steel last. Avoid plastic drains that will break and wear out over time. Go full metal. Life is a chore. Some things must be done. Clean your drains regularly. You might just need a stiff brush or a soft cloth to clean out your shower floor drain. Get it done then focus on fun things. Just slot your bathroom floor drain into the channel you have already prepared. Make sure everything lines up. Use silicone sealant as required. Better to do it right the first time. Pick the right length for your drain. Use the floor drain in your kitchen bathroom or even outside. The drain diameter is 50mm.