If you are looking for reliability, i would suggest to stick to a reliable brand.
Stick to reliable brands like Amazfit, Realme, onePlus. Stay away from highly marketed brands like boltt, boat, noise and tonnes of other brands which just go shopping around in china and put their logo on the box and ship it here.
What this means is you will have to shell much more but I am sure you will not regret it.
I am talking about this being a smartwatch user since the last 6 years. I have brought couple of mi bands, amazfit watches, samsung watches and finally stumbled and regretted buying boltt and noise.