i think you will keep hating it unless you start doing and checking the things we keep telling you to look at.
if we need to know the valves are all ok , we will also need to know they are working right and the tappets are set.
if not you will get oil burning poor running more loud noises as things expand with heat and if a valve remains open when its supposed to be closed .... well you know the outcome.
i gave you a list of free things to try , so try them fully
did you check for pressure from the water rad top ?
pressure from the oil filler ?
your missing crucial info for diagnosis , giving up is easy, not throwing your money into an engine for the fun of it . is the hard bit.
i think i am at about give up point on this one tbh
id also be looking at anything hitting the fan, dirty electric connections, clean every one pull out and check fuses are clean (one at a time ) clean all live and earths.
check fuel lines for weeping
nothing hitting fan
all electric conectors are clean internally outside dirty tho
fuses are clean and not broke inside engine and drivers pannel
fuel lines are new and fine no fuel leaks in the engine bay or under the car
their seems to be no water in the oil the next step would be to drain it
radiator is fine no extra pressure in pipes and no bubbles in the header and no coolant loss in header or radiator
belts are undamaged and working as they should
vacuum seems to be fine no light on dash for the brakes
brakes are fine work as they normally did
engine slow to start ticks over fine with excessive blue smoke, rattle seems to only be their when warm, engine will do the full rev range, oil to the turbo is coming from the breather pipe on top of the rocker ????
drive is fine no difference their gears and clutch working as they normally do
power steering fine and heater is working fine (this also played up when hgf)
all other fluid in the car is fine
oil in the engine hasn't rissen and hasn't dropped that much
i will get some feeler gauges and do the tappets next then