4 months is actually really good, relatively speaking. Just wait until you have 20 years experience, and you are trying to explain to your interviewer (who has 5 years experience) something which took you 15 years of hard experience to learn....
35 years experience here, been looking for 2.5 years.
The problem is that “experience” has no value in our industry, unless it is recent experience with some technology, framework, language, and the memorization of those algorithms and data-structures.
About 10 years ago, I was looking for jobs, and wasn't getting any bites. My wife said "Cut your resume in half. Only show the last 7 years of your employment history."
It worked--when it wasn't so obvious that I was a graybeard, I got a lot more interviews. But it was epochally, cosmically sad for me to cut out 15 years of my experience--describing achievement I was really proud of. And just throw them in the trash.
35 years experience here, been looking for 2.5 years.