I hate to say this, but if you’re ‘stretching your budget’ to buy an Apple Watch, then you can’t afford it. I’m not saying there are not lesser alternatives out there, but they’re definitely cheaper alternatives if you can’t afford the Apple Watch, which is Ok, because Apple products are very expensive in general.
That said, most the Apple Watches accomplish all the same task(s), one could purchase a Series 3 Apple Watch and still have 90% of functionality as the Series 5 would have, so you can still enjoy something, but consider the cheaper model for your ‘budget’.