Gorbals law and money advice centre Glasgow, free advice and support.might be worth talking to them. There are other law centres in your area this one may be able to point you in the right direction.
I went to a local law centre they were really helpful , Citizens advice good but not as informative as law centre.
Turn2us is a site online with benefits support and advice, brilliant online benefits checker.
Please ask about national insurance contributions as need to be paid so you get a full state pension. new state pension has different amounts paid dependant on NI contributions might not be entitled to some benefits but claming them may mean your NI contributions are kept up to date.
My PD support worker great but was not able to help with benefit advice in any great detail. PD helpline but I did not use this service but worth a try.
Hope this helps xx