I take it your courses will be taught remotely. My colleagues often complained about obvious signs of cheating on exams, like using weird ass notation. I had some students who copied stray marks that were on the solution they found online because they clearly didn't understand the solution. One thing you can do is make students write explanations on exams, so even if they find a solution online, it's useless unless they understand what's going on.I could get away with a single exam but there is no testing center to send them to where I can ensure that they can't cheat.
I'm happy to be back in the classroom this semester, and so are the students for the most part. The remote classes definitely took a toll on some students. I'm teaching the second semester of intro physics, but I noticed some students really don't know what it takes to succeed in a physics course. Some don't attend regularly (and miss the labs as a result); some don't do much of the homework; etc.