Don't worry about sounding selfish, you don't! Furthermore, you should at least hear that asking for help is a smart thing. Always! Even when it makes you feel insignificant or even stupid for not figuring things out for yourself, it is a smart thing to recognize when you need help. And you already said enough about your situation at home to really justify that. Most times here, you seem just like any other happy poster here, no one would guess the situation you're in. Carrying on like that only shows that you are a very strong person. Still, feel hugged right now.
Concerning Lockdowns... I really do not know how the country you live in deals with the pandamic. Mine (Germany) does very poorly. Even though the number of infected persons is skyrocketing, it is all but certain that there won't be another lockdown. The reasons for that are purely political and not at all connected to the overworked healtycare system. A few month ago we had elections and no one dared to do anything out of the fear of losing voters. The new government is completely overwhelmed with all the problems that have to be fixed and so far nothing happens.
I'm sorry, I drifted off. My point was that there are some very stupid reasons to delay things like lockdowns and more often than not, politics stand in the way of otherwise good measures to fight the pandemic. At least in Germany. So perhaps a lockdown in your town/country is less likely than it seems.
As always, keep your head up! *hug*