Suspension and Power Off problem in Kubuntu 26.04 LTS - Lenovo Ideapad Slim 3 15...

After installing Kubuntu 26.04 on my Slim 3 with Ryzen 7 7735HS, i noticed that sometimes my machine wont wake up from suspension, it acts like it is suspended, with external devices RGB off and with the power button blinking as it should. but when trying to resume by pressing any key or pressing the power button once, it wont wake up. I need to hold the power button until it turns off and then press it once to turn on again, and when this happens the battery protection mode always turns off and i need to turn it back on. I made a post about that here before, and a suggestion was made by someone for me to update my BIOS. I did it through a HirensBoot formated with ventoy, since it was my only option (i dont have windows and the only installation media available is an .exe file on the lenovo site). Was pretty confident that this was going to solve my problem, but it persisted and now, a few days after the update, my computer wont turn off most of the time. In that state, everything looks exactly like when my computer is powered off: Black screen, no rgb in external devices, but the power button glows white as it does when the computer is on. And my battery drains somewhat fast (drained about 80 percent after one night and one morning). Can someone please help me with those problems??