If I ride to work, I’ll get hot and sweaty
The best way around this is to take it easy. Leave in plenty of time and don’t rush. You can bike along at a fair clip without getting hot and bothered, and many work places now have showers. But buying some kit will help, too. If a full-on Lycra suit isn’t your style, try a cycling jersey. You’ll want something in polyester or another synthetic designed to wick sweat away from your skin. Cotton is fine, but once it gets wet, it stays wet. But the best advice is to slow down.