It's odd how so many people on this website seem to want to have OCD. Compulsive behaviors aren't necessarily OCD. But things don't have to be OCD to be a problem. One question would be, are you buying things you actually need? A second is, can you afford it? We all have things we do a lot because we like them. I used to go camping so much I kept my camping gear in the back of my van so I'd be ready to go at any time. I used to play basketball on the playground 3 hours a day. People run marathons. People climb mountains. People jump out of airplanes. So if this is just what you enjoy doing and you are rich enough to do it, I wouldn't say excessive materialism is a good thing but hey, I don't decide that. If, on the other hand, you are buying things you can't use and are spending yourself into debt, then you have a problem. By the way, compulsive gambling is only a problem if you lose all the time. If you won all the time, it would be a profession. There are professional gamblers who make a great living doing it. Is it compulsive to go to work at the same place every day? Sure. We're all compulsive in one way or the other. The issue is, does it make your life better or worse, and is it crowding out other things that are more important and you're not getting them done. Now, of course, 3 our 4 purchases are unsatisfactory, that's what buying online is all about. You buy clothes or shoes you haven't tried on, you're going to get a lot of stuff you can't use. You buy things or brands you're unfamiliar with, you're going to get a lot of badly made merchandise. It was better when we went to stores and could touch the stuff or try it on, but we stopped doing that and those places are going out of business. The whole game of buying online is to believe you're saving time when it actually takes longer and getting things you can't actually use. But that's me editorializing. Back to being serious, again, if you're quite wealthy, what else are you going to do with your money? You could give it away to those who need it, but all rich people own tons of stuff even if they do that. You don't say if you're wealthy or not. So ask yourself, are you spending yourself into debt, and are you buying things you clearly neither need nor really want. As to whether it's covid anxiety or not, I guess if you only started doing this since covid started, it's possible. It's also possible you're just bored. Can't answer that one for you.
You know, I'd say yes, it is mental health related. It can be almost like an addiction. Shop, get a high, come down, shop again. Often done when feeling bad. It soothes emotions. It can be a very destructive issue. And online shopping makes it so much easier and worse. Here's a good read on this. https://www.goodtherapy.org/learn-about-therapy/issues/compulsive-shopping
It's not always an addiction or compulsion and that article has a check list for when to be concerned. My question is 1. do you feel out of control 2. do you have regret after and 3. are you financially suffering. If any of those are an issue, then I think a therapist would be very helpful!