I don't have a pet rodent

Thank you for the condolences.

So recently, I am encountering a strange behavior on my mouse. I bought him from a mall pet shop a year ago. Yesterday he starts puking and twitching... just kidding lol. As a digital artist who still use an ancient peripheral in digital art called a mouse (because I dont want to use a tablet, it consumes space and I'm used to it), it just HURTS.

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My left click would suddenly lose its grip... for example when I make continuous lines in MS Paint, it will cut then it will continue again. See figure below.

In the first continuous line (fig. a) I pressed the upper part of the left click and it would lose its grip a little. At fig. b the position of my finger was very bit lower but the rate of unclicking is higher, and at fig. c it is at the middle, and is likely to lose grips even more. I also noticed it is likely to break grips when I do curves so I tried it at writing smol letter b. The lower and middle presses will immediately break the curve in "b", meanwhile at upper, it is not likely to. Few days ago there was a Windows Update I believe and it was fine before that. I tried pluggin at different ports, shit did nothing at all. I think it was starting to wear off. I do not want to change the way I hold the mouse, my hand is smol.

I am just devastated lol. This is hell whenever I use the free shape lasso tool ( it deselects and selects chaotically) or to outline characters. It's just a standard mouse, an a4tech mouse since in my university this is the only mouse they use and I'm used to it, so I used the same brand xD It is pretty understandable, the large amount of clicks when I draw a lot of leaves and it got wet from rainwater that poured on the ceiling last year during a rainstorm. I dont think I could buy a new gadget/peripheral this pandemic, I even stole my brothers headset when mine broke lmao.

If you know a solution, lmk. tyia <3