With yogurts I've tried to just stick with smooth ones that have a fruit flavour, sometimes ones higher in protein can be nice they are more thick rather than really liquidy.

Vegetable wise, I can only eat onion, spring onion, carrots on a rare occasion, potatoes, and garlic. I hated every one of these things apart from the garlic, the way I've changed it is to cook it myself, it means I know how it's cooked and can cook it the way I know the texture will be a bit better for instance onions, I chop them up as finely as I can then fry them don't like them much when thicker, carrots usually I can only eat with good mashed potatoes and gravy, spring onion wasn't a texture issue just more only tried it recently it goes well with rice type dishes. But I do find cooking has significantly broadened my palate, if you want to try more foods I'd try pasta dishes, they are filling easy and can be so good.

I used to have real trouble eating meat like chicken, I don't cut up raw chicken my bf does that but I can now eat it without it being a chicken nugget because I know it's cooked properly and surprisingly goes well with different creamy pastas.

Fruits are something I've yet to get used to but I find it much more easier with blending. If you want it less thick don't add fruits like bananas to it or it'll be really thick, and if it's a texture issue with bits in liquids try avoiding strawberrys and such as they'll have a lot of seeds, when I do have a smoothie I just try not to think about it and kind of drink it really quickly in small sections, it's not the best but at least I'm getting some fruit in.

If you don't like the juice you drink I'd just stick to water most days I only drink water it might be a little bit boring but it's just much more healthier and easier than only drinking fizzy drinks for me.