Dash AC not cold

I'll have to have somebody troubleshoot it probably going to need a new dryer and I guess I'm just going to guess an expansion valve if it has one and then completely flushed and then refilled. I suppose there's a chance that it's either too high or too low on refrigerant but without draining it doing any kind of cleaning that needs to be done however y'all do that and then refilling it. Not going to do all that without testing it in terms of the dryer and stuff first. I assume that's what's a professional would do anyway. Temperatures only getting to about 62° most of the time maybe a little lower on the cooler day and the low side doesn't change at all which doesn't seem from everything I'm hearing to be correct. So probably something wrong. The guy that told me he seen him take 10 lb also said that the dryer if it was going bad would be all froze up and I haven't seen that I haven't seen anything on that dryer at all in terms of moisture.

But if everything was good but levels. Wouldn't we see the low side increase or decrease in pressure?