Trading Daily chart only support and resistance

So I have been demo trading for a while with this strategy
It is a simple but very effective
I just draw the main S+R (Trend lines too)on the daily chart
And when it is in a good position (near s+r) i get in the trade
And wait few days to hit TP
The SL is a little below the last high or low
And take profit adjusted as the price moves
What do you think about this strategy
And what suggestions do you have…

Lots of people say they could not trade profitably without s/r, so it isn’t a crazy idea.

But the key to using s/r effectively is how you use it, specifically at the very first instance, how you define your s/r levels.

Does the line need a certain number of price touches?
Is the s/r level abandoned if breached? Or maybe breached twice?
How far back is the first valid price touch of the s/r level?
How recent is the last touch of the s/r level?
Do you permit sloping s/r lines?