Do I need eslint ? Or to learn VSCode debugger?

I am a hobbyist and have never written a program longer than about 400 lines. I have had no luck installing Eslint, and note that there is a bit of negative comment about it on the web. Also I have just started to get into VSCode debugger and am finding it hard going. Question: Do I need Eslint and VSCode Debugger to analyse a 400 line program, or should I just stick to console.log? I seem to be spending more time trying to figure out these 2 items than actual coding. Would appreciate some guidance. Thanks.