Hello hobo,I see that you are recently joined I hope you are enjoying the forum and finding us supportive.

I suffer with sleep apnea,I feel tired as well during the day some days and some nights I wake often and don't get good sleep,but other nights I sleep well and so feel ok the next day.
Perhaps you are one of those that need treatment at night with the oxygen mask.Maybe you need to visit your doctor or is it medics that they are called in the US to sort this out.Here in the UK they have a gadget that they put on your finger to measure your oxygen levels and if low, mine was once 17% out of 100% ,then they may give you the oxygen mask to use.

People say they sleep much better wearing the oxygen mask at night and feel good during the day because of this.I hope you can sort this and give it a try as it is worth a try if it makes things ok again for you.