I have seen a great progress in my puzzle rating just by spending more time in a puzzle. Like if I don't get the solution I try not to look the solution immediately rather try to work out the position a little bit more this thing is hard to implement but you'll improve eventually.
And work daily on your tactics. Consistency is most important. There is no easy way out.
I've tried a few on here and an offline app on my phone and I'm simply awful at them. How do you get better, is it just trial and error or is there a better way?
By practising them regularly. Start off with easy ones, and take your time.
I have seen a great progress in my puzzle rating just by spending more time in a puzzle. Like if I don't get the solution I try not to look the solution immediately rather try to work out the position a little bit more this thing is hard to implement but you'll improve eventually.
And work daily on your tactics. Consistency is most important. There is no easy way out.
Hope this helps.