Without (a) having worked alongside you or (b) seen the work you produce, it's impossible for anyone here to give accurate advice. For (a) I would advise askin

Without (a) having worked alongside you or (b) seen the work you produce, it's impossible for anyone here to give accurate advice. For (a) I would advise asking previous employers (both the manager who made the decision to let you go and former work colleges) for honest feedback. It's difficult to give honest negative feedback, so be clear that you are asking because you are genuinely interested in self-improvement. For (b), just thinking aloud here, do you have a github repository where you can show us your work? There may be fundamental issues with style, logic etc that could be addressed through training.