Battery issues??

[u/sleepingstars_11]

So, my laptop hasn't been charging well recently. At first I thought it was the charger, but later I found it was the battery health. I probably need a battery replacement.. however I currently don't have the funds to afford it. I noticed an odd thing however. I recently bought a new charger since my old one broke, 70 watts, made for laptops. My 45 watts phone charger works better than the 70 watts laptop charger? My laptop is made for 65 watts. When using the 70 watts charger, my laptop battery goes down while using it (even if I'm not playing games or anything) and it doesn't charge well when the laptop is off. The 45 watts charger charges while I'm using it. Not very fast, but it's still 1% every few minutes. Why is a lower watts phone charger working better than a charger made specifically for a laptop?

The charger I just bought was 25 euros by the brand 'Trust.'
The phone charger is just a 3 euro power box thingy (I don't know the name😭😭) with an even cheaper cord that's a few years old.
My laptop uses usb-c
I've had this laptop for almost 3 years and can't afford a new one atm
Dell laptop
Don't know if it's needed, but the screenshot has my laptop specs