so you think I should give him the dummy for bed time and during the night too when he dosent currently require it?
Being put in the cot awake with a dummy is better for independent sleep than being fed to sleep and then put down already asleep. But it's up to you. SIDS protection comes with regular and consistent dummy use gorgeous every sleep time. But if baby if going from awake to asleep in the cot without it and without crying, then personally I would go with that.
now woken and is really grizzly yawning but won’t go back to sleep
Bouncy chair is very useful as a way to lull baby back to a deep sleep when stirring, before fully waking. Having said that 45 minute naps are not unusual, just keep then very frequent with short awake times.
I’m constantly trying to get him to go to sleep as he’s always yawning so he never has any play / activity time
There should be very little awake time in which to be grumpy. After a feed and a look at the nappy to see if it needs changing, if you get 15 minutes activity time that would be good going. It might only be 5 minutes. Then back to sleep. That's what life is like with an under 4 month old baby.
He also hates being swaddled and hates his bouncer
Unreasonable (not to mention impossible) you say that at your weeks. Baby doesnt hate anything, he's only just been born. Some things need some getting used to. An over tired baby or hungry is likely to seem like they hate everything. It foes get mean they do though.
As well as that, baby's change and grow very quickly. Often these things just need persistence and time.
With regards to swaddling, fighting against a swaddle is specifically the behaviour of a baby who would benefit mist from the swaddle. It's there to calm and sooth baby by recreating cramped womb conditions. I'd keep trying