Firstly, if little things are starting to feel overwhelming and you're losing energy just maintaining yourself and you're having trouble reaching out to people you know you could be depressed or something else that's funky could be up. Sudden poor personal hygiene (when you said you're having trouble showering every day) could be a sign of the onset of depression. I don't find it surprising that the current times we live in feel overwhelming and that everything could be impinging on your ability to take care of yourself, though, comrade so take that with a grain of salt.

Saying that, I don't know how applicable this is to you, but for me things just got easier as I did them. I wish there was some easy technique I could tell you, but I got better as I kept forcing myself to do stuff. Calling a friend I hadn't kept up with for a long time gave me a lot of anxiety, but it got much easier calling him the second time a few weeks later; now a few years later I don't have any problems calling or texting with people I haven't in a while. Cooking everyday sucked, but I kept at it and made double batches so I didn't have to cook the next. Holding down a job wasn't easy at first, but I kept at it and came back even when things were shitty and I didn't feel like I wanted to go back and eventually it got easier. I did everything as lazily as possible, I had a shitty dishwasher but didn't like it when I had to scrub the dishes after they came out a cycle - so I just ran through loads twice. But I never really had to deal with not having enough energy after just taking care of myself, so I don't know how much help that'll all be.

Things also became much easier with an SO, but that's not really legit advice, lol. But maybe reach out to your own personal support network and ask for help from people you trust: close friends, non-judgmental family. Ask for help cooking, cleaning, whatever. Not everyday, unless you need daily help, but someone coming around with a hot meal every few days and someone that can help you clean up your room or something once every couple weeks will make you feel better. It might seem embarrassing but it's better than just continuing on a decline. And if you get to feel like you have a better handle on things, don't forget to pay it back when they need help. The first ask will be hard and anxiety filled but it will be worth it.