Both YesStyle and Stylevana do lots of mini sizes. Both sites have a min order for free shipping and you can expect standard shipping to take 2-3 weeks but I find mini sizes helpful to trial new products as it feels less wasteful if you don't like a product.
If ordering from either of those sites make sure you only add items that say in stock/24hrs otherwise it delays shipping by a lot. Also check out their facebook/instagram page, they put the best discount codes and free products on there.
A lot of brands do incentivise influencers on Tik Tok and other sites so it can be difficult to know what to believe but sometimes viral products are good or at least paid promotion doesn't necessarily = bad.
For example, last year everyone was going wild for Tirtir milky toner and it was promoted everywhere - it is actually pretty good, maybe not totally life changing but a very nice hydrating milk toner.
https://www.reddit.com/r/AsianBeauty/
This is a good subreddit. They're very strict about not allowing fake brand promotion and will ban if they catch it. So it's a good resource - if you find a product you like the sound of search the subreddit to see what others have thought of it. Just bear in mind everyone has different skin/skin issues.
I have skin that gets dry especially in winter so I've tried lots of hydrating toners. My top 3 so far would be Dr Ceuracle Vegan Tea Kombucha, Mary and May Blackberry Cream Essence (both these are shake to mix before use) and the aforementioned Tirtir Milk toner (original is my preference they also do a light version).
If you want to try something that helps with sun damage, dark spots or hyperpigmentation there will loads of recommendations out there, it's just not something I've tried to target personally.
If you want to come back to this thread with products you like the sound of I'm happy to help with the research - I love chatting about this stuff in a bit of a nerdy way and there are others on the S&B board who are the same!