First, "free will" does not mean We create Our own realities. It means that within what We have to work with, We can make decisions. That it's not all pre-determined.
You ask:
"Do you ever feel like you're making meaningful choices in your life?"
Every day, all day.
And:
"Do you feel like you have the power to shape your own destiny?"
To the extent that being a targeted Individual will allow, yes. But when You spend a decade + trying to get a job (even though You are disabled and probably could not keep pace), applying to 35 - 50 jobs a day (over 130,000 in the 10 years +), having many job offers but then hearing nothing - calls and emails go unreturned - and on the dozen or so that You actually get through to someOne, They ALL sound very nervous, make up stuff as to why You don't actually have the job, and even catch One in a lie...
You don't feel like You're the only One with power over Your destiny.
LOL! Random and free will are not the same. Free will comes in deciding whether You will grab the top book because it's easiest to grab, or the bottom one because Others have handled it less.
if you believe free will is simply part of a causal chain
then free will is reduced to an emotion, a feeling you have when you make an apparent decision
if you believe free will, as it is traditionally defined, allows someone to "change their destiny"
then you are delusional
I believe nothing. But I do place probabilities high that there is no "destiny," that Now is the only thing that's real, and that We, with Our free will, co-create the Now.