I’m probably not as experienced as the majority of those who will give you a response here
I’ve got just over 2000 hours on the bus in ~3.5 years in the job
I remember the feeling of being new on the jet and every landing feeling like an event/jump into the unknown.
I never experienced any real issues with landing during training but even when it went ‘well’ I could not explain well other than I did get quite confused when things went ‘wrong’- a float or what I perceived as a firmer than expected/desired touchdown.
I certainly struggled with consistency and would think quite a bit about different techniques, I heard about the 50ft ‘double flare’ and implemented it for a while but it didn’t stick with me as it seemed to create more issues than it solved; I floated plenty using it even if 1/5 would be buttery smooth and got praise and when you are landing into a place with a short TDZ or with a tailwind it’s downright dangerous
I can’t speak for others but can say confidently that experience solves plenty, focus on nailing the basics, no matter what else you read the FCTM/FCOM technique is absolutely where your head should be at for landing, don’t accept deviations and stick to this whilst you are still gaining exposure. All of the other things you have mentioned about what you’ve seen online about others pumping the stick or anything else during the flare will be coming from more experienced operators and comes more naturally when you have got more time in the seat- it’s not something you need to worry about replicating, it will come once you feel more comfortable.
when you have a bad landing the most important thing will be to analyse why and get feedback from the line captain if you can’t tell, more often than not they will have great insight and awareness into what went wrong there that you’ll lack early on. They’ll also likely make you feel more confident and tell you they’ve been there
in a few years you won’t have to think about it and when you have a bad one you’ll shrug it off because you know 9/10 are acceptable
if you are really struggling speak to your company or try and fly with more trainers, you need confidence in this situation and the last thing you want is a bad experience that will set you back months and stay with you