rubbing hands together while washing creates friction and helps to get rid of germs
There are four types of friction; sliding rolling, fluid and static, so depending on what you are doing friction is going to help you some how.
In the shower
On the ground on the pavement
Friction from every day life can help you slough off your layer of dead skin thus exposing the new healthy layer. Daily exfoliating with a loofa and or sponge can also help. Be careful to not over exfoliate or it could be painful.
that will increase the total surface area of the base of the shoe and thus will increase the friction force and this help a lot ex-specially on rainy day
The lack of friction on icy pavements when you are trying to walk to the shops, only to slip on to your back (maybe fracturing bones), shows how important friction really is.
If there was no friction the vehicles would never stop, we couldn't write on the board as friction makes chalk writing visible. Without friction no building could be constructed, the vehicles on the road would never move. Friction helps a lot in many ways and is a necessary in our life.
how does friction help car tyres?
No; friction decreases gas mileage.
by energy
I never heard of friction reducing friction. You can reduce friction by using lubricants, as well as using wheels (as in ball bearings).
wheels overcome friction