Filter pressure is relative to your system, it depends on pipe sizing, length of runs, pump, filter and heater etc. 20 PSI is generally good, I wouldn't want to see a clean filter anywhere near 50 PSI. Poor suction could be a blockage in the suction line or a leak in the line or at the pump suction side, either fittings, valve or maybe the lid. Does your system blow bubbles out the returns? Is there air visible in the pump basket? Does the pump lose prime?

pipes are 1 1/2"
Run is about 25' from pool return to filter/pump.
No heater. I am in MS
HP DE filter 4800
Pump is new Flowtec by Pentair
I see a few very small bubbles in the pump basket
Pump does not lose prime

Rechecked the PSI is between 7 and 10 PSI
I know this is not strong enough because i can very easily pull the Pool Cleaner hose out of the return.

Pentair doesn't make a Flowtec pump. Flowtec makes Flowtec pumps.

HP makes printers, not pool filters.

Replace the pressure gauge. I am not certain I trust it. If a new one shows the same, then there is a suction side restriction, be it a collapsed line, clogged impeller, or GI Joe with the Kung Foo grip.

What do you put your pool cleaner into? What else can the pump draw suction from?

What pool cleaner are you using?

Scott