Entrepreneur

Need some serious advice please. Ok so my 15 year+ e commerce business came to an end basically the lockdowns cost of living brexit etc and other things made it no longer a worth while income. Over the past year I have been trying to desperately get a job here in UK with my CS degree with no luck at all and have went full time in my soul destroying retail job. I have a child now and rent but we can barely afford anything extra like pensions good food etc. Since Ive had no luck getting a job ive thought about starting a new business because realistically it could be the only way to make a lot or even just more money. I would rather have a better job for stability etc but the market sucks big time. Trouble is i cant think of anything I would like to do and feel mentally drained just thinking about it and how much everything sucks right now. I was thinking of doing a computer developer business but everyone is trying to do that and overseas work for buttons plus it will be hard to get work done on time for clients with my ft job and baby etc. I was considering "inventing" making and selling my own product but marketing is expensive. I just feel like all ways to make money legally suck right now. I would love to buy a brand new gtr though and retail will never allow that. What do yall advise please?