Hello I always had this doubt if it is better to have high dpi and low sensitivity or a low dpi and high sensitivity I do not know much about the subject that's why I come to ask for help
Mouse: Logitech G403 Prodigy
Sorry for my english

Bottom line, it's better to have High DPI and Low Sens, especially with mouse these days.

Here's a good thread about this:

 

in my experience its the opposite. Low dpi and the sens u like. Ofc higher dpi is accurater but no human is accurate.

So low dpi is for me more helpfull cause it filter out my small jitters.

far fetched comparison: why else is there robots for precison work, cause human can not do it

It all varies from experience to personal preference.

I've been on PC for roughly 7 years, 2 of them years I had my DPI at 1200 and sometimes 1600 - With this DPI I was so inaccurate (I had low sens too), the mouse was catching my jittery hand because of it and overall it just affected my aiming - When I went to a lower DPI and higher sens... the DPI filtered out my hand jitters (Same as @Quackerjack) - this then helped improve my aim and performance due to the crosshair being more consitent in where I'm telling it to aim and over the years I slowly built my aim down (From a csgo standpoint) to 400 DPI and 0.8 sens (Used to be 1200 DPI with 1.8 sens)

 

TL;DR - It's all down to the user themselves, if you want to lower your DPI then do it in increments of 100 and every time you lower it via 100 - play some type of aim trainer (Like the one mouse-sensitivity link) and keep adjusting it until you're comfortable.