I do work out regularly (bodybuilding) since high school, it’s becoming less manageable after I graduated college and started working… even though my job is ful

I do work out regularly (bodybuilding) since high school, it’s becoming less manageable after I graduated college and started working… even though my job is fully remote. Afterr a long day of work, I’m exhausted already and have to drink more c4 (pre workout) before I hit gym (usually around 4 - 5pm), which usually causes me not being able to fall alspeep nicely at night, and this has been going on for two years and my immune system is nothing like before, I found myself becoming more prone to diseases, I got Covid while my gf didn’t get it despite the fact we live together and recently I got eczema on my back… all this just for saving up for down payment of a house…