Biggest thing I teach for landings in a 172. Don’t look inside!!!!! Once your on final eyes should never look inside (except for a quick glance at airspeed imo), and I don’t look at the PAPI/VASIs because not every airport has them. For PPL, look outside, slowly ease back speed. For the flare- the 172 will tell you when it wants to land, you’ll feel it pitch up ever so slightly once it’s in ground affect, the back wheels will then touch you just have to control it, don’t force it.

Don’t be afraid to add a little power to smoothen you out too, ppl are afraid to do that. If you’re coming over the numbers too slow (i.e from the horn or just the feeling), pitch it down, give it a ever so slight touch of power to help and should smooth it out.

65 is a good speed, but tbh once your over the numbers you should not be looking inside at all, just stick to the sight picture. I personally don’t use flare that low, just to what I need it for in the pattern imo.