My laptop is draining charge so fast, security issues on web and laptop's data that is stored

Battery performance is very worst now because last time when i switched off my laptop it was 71% and now it becames 55% today and just used for 15 minutes it reduces just for 38% only i have seen 15 minutes of two videos on youtube and used chatgpt's 4 to 6 queestions to answer me and this much charge is drained and i have switched off every high poer consuming after the lid opening but still the same issues belong is the microsoft is becoming worse or how should i trust now on microsoft there is very basic security also that microsoft provides on web and for laptop it is easy to accessible thn any kind of laptop is available in the market as compared to microsoft and microsoft's laptop easy to access in any kind of attacks easily why is it so have some reputation atleast work better on this issues i am thinking now that my 60k is waste now what is this if i am prone to a simple attacks and laptop is not having a good security and battery issues and system performance is also weak then why we should buy this laptop there's a better demand i market of mac and it provides everything good better than microsoft my family memebers suggested me to buy mac but still i choose microsoft but now i think they have taught me better.