I hate tipping culture!

Nowadays every time I buy something they ask me for a tip, I watched a homeless guy singing in the streets today and he asked me for a tip, I said I don't have change and he gave me the dirtiest look ever!! I nearly cried 😂 and another incident I was buying a lipstick and some hair products from the pharmacy I was paying with a contactless card and they asked me to pay money for some charity about cancer or something, I had to agree and pay it because she was waiting for me to hit yes so I hit yes 😭😭 here in the UK it's not mandatory to tip in restaurants because prices are already too high I went to a fish and chips restaurant with my friends at the beach last month, and they asked me to tip them for a meal that was mostly ready made frozen fish and chips which was expensive too 😭