I think a lot of women find that young babies really aren't that interesting company, but it's not something that is spoken about openly, especially before someone has a baby and therefore it is a massive shock after the baby is born.
What saves most women in this position in normal times is the baby activities, babies don't need them, it's company for the parent, but you've had the added difficulty of a pandemic.
As normal life starts to resume I would try to put yourself out there and join as many activities as you can afford to. Give yourself as much chance as possible to find like minded people who you click with. The relief when you find another adult on your wavelength who gets you is massive and so worth the effort of making yourself go.
Another bonus of babies at that age is that you can do what interests you and take them along. I used to take mine to art galleries, the library, cafes and read a book while she napped. These things will start to be possible again soon, what do you enjoy doing for you?
Try to think about how you could get some space, I took up running and I hate running, but being able to hand the baby over and literally run away for 20 minutes really helped and I didn't have to be somewhere at a set time which helped.
I remember the longing for doing something with just my husband, in fact it started the day she was born when the midwife sent me for a shower with my husband to help me, I was so relieved to get away from the baby and just be with him. I promise you will have these times again, mine are now 4 and 8 and i've been able to go on dates with my husband (pre Covid) and leave them with my husband and go abroad with friends.
As other's have said speaking to your GP is a good place to start, they'll be able to support you. Life will get better and you will be happy again.