What do you mean by "force load of that software" exactly? I haven't. Android 11 will come out soon as it is currently in a closed beta stage. I don't think there are any promises of increasing battery life. Depending on your phone, you may or may not get Android 11.
Some common battery drain solutions are turning down your brightness, turn down refresh rate or resolution if your phone supports it, turn off Always on Display, reset your phone frequently, use earbuds instead of the loudspeaker, and disable quick charge. Try turning off notifications that constantly ring your phone like Youtube, Facebook, Instagram, etc.
I would say after 2 years, the battery should be replaced which is normal.