A980 PRO MAX

I also got a fairly sweaty hands, similar hand size (20 x 10), and grip just like you. The Leviathan V4's coating is still really good so far after almost a month of daily use and my aim has been considerably much better and consistent compared to when I used the A980 Pro Max (both are very different shapes though) Although can't say how long the coating will last and my hands are probably not as sweaty as you, plus the grip tape that's included is more slippery than the mouse which is....interesting.

If you want maximum longevity, you should stay away from Logitech, Razer, Steelseries, HyperX, Corsair, and Redragon, since their softwares are required to run their mice, and when they stop updating the drivers for your model it will stop working the next windows update. Additionally these brands also thin out the shells in highly stressed components in order to ensure they break after approximately 2 years of use. All these brands get money through a resale-scheme, by making you have to constantly buy a new product from them. My recommendations are from brands that are still small and growing (so they're economically incentivised to make good, reliable products and ensure they have good software support, even if they drop software support for later models, since people will most commonly look at their original products to gauge reliability). These brands are still gaining customer loyalty and as such will happily help you with any problems you face and have already designed their products to last as long as possible. If you wanna try vertical mice: The Hansker performance vertical mouse is shipped from Germany (if memory serves me correctly)and so should be relatively easy to post to India. The Keychron M5 is also worth a try since they have multiple European stores and warehouses. The swiftpoint Ergo-point is American unfortunately so I don't think you could source one easily. For standard ergonomic mice: Kysona Uranus Pro copies the tried and true Roccat Kone shape, it's cheap, built like a tank, and is amazing for palm grip. Keychron M7 (not the M6, the M6 has a design flaw in the sensor that makes it behave unexpectedly). Dareu A980. Glorious Model i 2 (the model i 1 has issues don't get it). Roccat/Turtle Beach kone XP air (discontinued, but there is still old stock floating around). These mice should all be fairly easy to source and relatively cheap (and most importantly, they're all built to last and their software isn't required to run to keep the mouse working, so you don't have to worry about software obsolescence thankfully, most actually can use browser-based software, meaning you open up safari or chrome or edge, open up the website, and then the website talks directly to the mouse and tells it what settings to change, no need to even download a software).

Dareu a980. _ 3 buttons. Glorious model i (the wireless one is better QC wise). _ 4 buttons. Keychron M7 (M6 has very weird sensor behaviour for unknown reasons, so don't get it, wait for reviews on the M5 first if you want the M6). _ 3 buttons. Swiftpoint Tracer (or Creator or Z2). _ 8 buttons + analog main buttons (Z2 has motion controls). (Discontinued, but old stock is still here and there) Roccat/Turtle Beach kone XP air. _ 7 buttons + scroll tilt. (If you're prepared for fighting Steelseries software, saving the keybinds to the on-board memory, disabling Steelseries software entirely, and then controlling the RGB with OpenRGB) the Steelseries Aerox 9 is mostly ok, not the best ergonomics though and easily the worst performance and weight of all of these. _ 12 buttons + scroll tilt.

Wired - razer cobra, deathadder V3 wired, pulse fire haste Wireless - mchose g7, dareu a980

Mchose g7, Dareu a980, attack shark v6 these are g502/basilisk clone but lightweight and has better specs so if you enjoy the g502 shape get one of these mice.