I need to change my servo I think I have enough knowledge but my issue is the ABS brake bleed I would like some help please?

Okay, so I'm 99% sure my servo is bad I think maybe it was caused by the vacuum pump, but I can't change the vacuum to big off a job as it's behind the engine I can't and don't know how to remove an engine to do this. But I do want to remove and replace the servo and master cylinder I think I can do this alone but I just need some help with the procedure for bleeding the abs brakes I did watch your video but still a bit unsure and would appreciate some guidance I don't have the diagnostic machine and if I will need this I will need some time to buy one as I don't have any money right now hence why I'm trying to DIY it. Many thanks, Ricky. I look forward to your reply.