I'm the same, ds HATED car seat and pram until about 5mths.. Hated being confined, hated not being able to see out, and had reflux so didnt like being horizontal or squished in middle! I ended up doing very short stints in pram, up our little road and back, and just lengthened them over time until he got more used to it... Think he did t like rolling around in pram at that age, felt very insecure..
So started with a cheap baby carrier, realized it was crap, really hurt my shoulders, bought a manduca, still use it, my DS is HUGE chubby bub, now 12mths old!!! Best way to calm him and nice for him to see stuff at adult level, also it's versatile, can use sideways, front ways or on back... Which is useful as they get older...
All weight is distributed on ur hips exactly like a proper backpack would be. So I wld get either manduca or ergo, try eBay if u on budget. So so worth every cent spent. (I know I sound like I'm getting a commission ha ha, just think its a great quality product and wish I knew about it earlier)also those front facing ones are sposed to be bad from an ergonomic perspective, legs aren't sposed to dangle in front etc not good for hips etc...
Best way to settle LO for bedtime too... I would walk along patting his bum singing songs until he was wound down for night... Wish I figured that out earlier too!!!!! Good luck, your LO will grow out of it in time..