User Activity

I dont usually use those features much.These feels annoying to me. How can I remove these form the panel . Seeking expert's advice
I took 4 photos of this plant. All of these photos were clicked one shot. ( not brust shot neither continues) . So why these photos got stack in my gallery . This happens every time when i click more than 2 photos of same object or scenarios .This is...
Can I charge my phone with a 30-watt charger without any issue. Currently,I am using Galaxy A55 which supports 25 watt charging . ?