Need a bit of help with my teeth health

Hello, my parents have never done any kind of oral hygiene so their teeth are naturally pretty terrible, by genetics mine are pretty fked up that even wearing braces for a year didn't help much, I've just recently started washing my teeth daily(for about 2 years now), probably would before too but then they refused to buy tooth paste or tooth brushes cause "it makes your teeth weak" but since I started saving my money I've been spending some ocassionaly on tooth paste and stuff but they're still pretty yellowish, even when I put on tooth paste they change colour to some wear shade of grey idk, I'm unable to see a dentist since I live in a small village where we don't have one and closest city with one that doesn't charge a shitton of money for an appointment, money which I cannot use for something that's not top priority. Is there something I can do at home? I've ditched sweets and started eating a lot رابط رابط رابط more fruit 6 months ago. Any tips or something?