Welcome to the forum ,,,
There are a few threads on the recommend a new welder ideas , but the basics you have to sort out before you start
budget ... do you need ppe too
size and weight
new or second hand
power supply you have
what you want to weld
materials you want to weld
what features you must have , what features you would like
location , very important , as it effects what you could get repaired ie local back up
once you have that lot sorted the actual machine choice becomes a little easier , but be warned , its only a little easier ..