The buttons interfere in fine quick movements especially 'up' and 'down' movements and also in picking up and putting down the mouse while maintaining best uninterrupted control. I dontt think there is much you can do besides ensuring that your driver is. (some source here) It seems like your mouse is of medium quality and does not provide proper key rollover for the thumb buttons. It contains all the necessary features that you need in an awesome gaming mouse.
This mouse is a fantastic choice for gamers as it will not disappoint them. The forward and backward buttons do not function on Mac. Just because more buttons can be put on mice does not mean that provides some essential thing that is necessarily better for 'gaming', especially where your grip etc matters the most. Either your hardware cant handle the combination of certain keys, or the driver on your computer is not fit to recegnize given combination. The mouse is compatible with Windows and partially compatible with Mac OS. We need mice in variety of standard shapes (I prefer the classic Logitech mx300 shape) with only the 2 main button and scroll, as the OP said. Makers are too concerned about leaving something off others have. Furthermore, it comes with a high 7200 DPI and seven mouse buttons, which are permeable. It is ideal for those who are set on a budget and pays off in the long run. It is a perfectly valid, needed, yet missing item the industry. An absolute choice for a unique gaming experience, pictek mice have turned the tables on the competitors.
Side buttons interfere with best and non-distracting grip for people like me and the OP. There may have been others that said that, but I saw at least one person say if it doesn't have side buttons it's not a gaming mouse.
I just want to say OP is justified in his request. After the latest Valorant update that was shipped to the game recently, many players are reporting issues while using their mice in Valorant.