@faithfulsteward7 Not even all PTs have up-to-date knowledge, let alone _trainers_. Not sending the knees over the toes _at all_ is being way overly hesitant w/ outdated knee safety information (based on one study in '78 that became the widely accepted myth for decades).
Look into Knees Over Toes for an example of what's more current. It's not something you should charge into blindly with heavy load, it still needs to be approached cautiously and you need to give it lots of time to build up tolerance in the tendons in deeper ranges starting with assisted bodyweight, but you absolutely can train the ability to send the knees over the toes as needed to achieve the squat position more easily.
One option for long femurs is also to point your feet & legs out a bit more to help decrease your back angle. But that's going to also require some good hip stabilizer strength as well. Another method along with this is to start with isometric holds with no or lower weight, focusing on perfect positioning.
Aside from that, another option to help dodge these issues in the standard squat a bit, but still make big strength & balance progress, is to work on single leg squats (split squat, bulgarian split squat). In KOT, they have a deeper single leg squat, but a shallower version could be used as well for your heavier loading.
Meanwhile, also be progressing calf raises (4sec eccentric) to work on calf mobility. These are often slept on because they can feel like an unnecessary accessory exercise, but the truth is that many of us have limited ROM in our calves due to sitting in chairs all the time, so getting these in is very beneficial, not a waste of time.
Btw, what's good about single leg squats/lunge movements is that it also helps you train some hip stability, and individualized leg strength, which translates REALLY nicely into standard double-leg squats, where often people run into issues due to strength imbalance among both their legs.
Any strength (& mobility if needed) that you can gain in your hip stabilizers (and calves), including both adductors & abductors, is going to majorly help with standard squats as well. A lot of people tend to have issues with positioning of the legs/knees in the frontal plane, which mainly comes down to those hip stabilizers being sufficiently strong & mobile.
Meanwhile, also be working on core strength & stability.
Even if standard squats feel too difficult right now, doing all these kinds of things is a great way to better prepare yourself for it.