Issues with account access and security on mobile

Hey everyone, I need some tech advice. I’ve been using a few different platforms for sports betting, but lately, I’ve been getting really paranoid about security. Last night, I tried to log in to my account while on a public Wi-Fi at a cafe, and I got a weird security warning from my browser. It made me realize how much personal info we actually have on these sites! Is it safer to use a mobile app instead of a browser for this? Also, I’m looking for a platform that doesn't make me jump through hoops every time I want to access my dashboard. Does anyone have a recommendation for a stable app where the login process is both secure and fast? I just want to check my balance and bets without feeling like I'm hacking into NASA, lol!